Skip to content 
Introduction
Some connections feel written in the stars — or more precisely, in the Moon. The moon phase soulmate trend swept TikTok in January 2022, resurfacing powerfully in March 2023, igniting a cultural obsession around natal moon phase and romantic potential.
What started as a CapCut filter experiment evolved into a broader conversation about compatibility. Your birth date determines your natal moon phase, and when overlaid with a partner’s phase, the visual overlapping — or gap — allegedly signals a soulmate connection.
According to the AstroTwins and practitioners of astrological compatibility, your natal moon phase in astrology says a lot about your emotional temperament, your instinctive reactions, and your inner world — adding another layer of understanding to your moon sign, or your “emotional blueprint.” The eight moon phases each carry distinct personality traits that shape how people love.
From waxing crescent to waning gibbous, full Moon to new Moon, each phase tells a story. Whether destined or simply fun and harmless, this viral trend invites genuine reflection on how an emotional approach defines relationship depth.
What Is the Moon Phase Soulmate Trend?
The moon phase soulmate trend swept across TikTok like a quiet cosmic coincidence, pulling romantics into its orbit through love-centric filters that promised something rare — a celestial shortcut to finding your other half through birth charts and natal moon phase data.
Unlike typical compatibility tests, this viral trend works by layering your lunar phase image over your partner’s — when two moons line up and form a full moon, the cosmos affirms a rare spiritual bond, hinting that your emotional lives are cosmically wired to connect in meaningful ways. When gaps remain between the two moon images, the trend suggests a less complete compatibility.
What separates it from generic astrology trends is its visual pull: a simple overlay of two moons either completing or leaving gaps, turning abstract compatibility into something instantly visible. With #moonphase crossing 430 million views, the For You Page became a testing ground for soulmate theories.
Even varying definitions of what a soulmate means couldn’t stop the hashtag from spreading — TikTok users tagged besties, celeb crushes, and significant others alike, applying the same filter to everyone from their friend circle to their natal Moon position data stored in old birth records.
How to Do the Moon Phase Soulmate Trend (Step-by-Step)
This is the section most people are looking for, yet many articles bury it or skip it entirely. Here is exactly how to participate, whether you use TikTok’s built-in filter or the CapCut method.
Method 1 — Using the TikTok “Moon Phase Test” Filter (Easiest)
This method requires no separate app download. All you need are the birthdays of both people you want to test.
- Open the TikTok app on your phone.
- Tap the magnifying glass (search icon) and search for “Moon Phase Test.”
- Select the filter and tap “Use this effect.”
- Enter your birthday and the other person’s birthday when prompted.
- Start recording — the filter will automatically generate both lunar phase images and overlay them.
- Watch as your moon phase compatibility is revealed on screen.
- Save or share the result to your profile or stories.
If your two moon phases combine to form a complete, round full moon, you are considered moon phase soulmates according to the trend. Any visible gap between the two phases is interpreted as incomplete compatibility.
Method 2 — Using CapCut (Original Viral Method)
This is the method that originally launched the trend and remains popular for more polished, shareable videos.
- Download the CapCut app on your device (free on iOS and Android).
- Go to TikTok and search the #moonphase hashtag to find the original CapCut template.
- Visit a free online moon phase calculator (such as AstroStyle’s tool by the AstroTwins) and enter your birth date to discover your natal moon phase.
- Do the same for your partner’s or friend’s birth date.
- Take a screenshot or save an image of each moon phase result.
- Upload both images into the CapCut template — it will automatically combine and animate them.
- Export the video and share it on TikTok, Instagram Reels, or wherever you like.
Quick Tip: You do not need to know your full birth chart or birth time for this trend — just your birth date is sufficient to identify your natal moon phase.
Is the Moon Phase Soulmate Trend Real or Just for Fun?
This is an important question worth addressing honestly. Professional astrologers generally agree that this trend is better used as a fun conversation starter than a definitive compatibility verdict.
According to astrologers cited by Parade, the trend is better for showing off your love online than for reliably predicting whether you’ve found “the one.” For deeper romantic compatibility, astrologers also recommend examining your Venus sign (which governs romance, attraction, and desire), your seventh house (which symbolizes long-term partnership), and placements like Mars (passion), Mercury (communication), Jupiter (good fortune), and Juno (marriage).
Dana DeFranco, a professional astrologer and host of the Allegedly Astrology podcast, notes that the moon phase soulmate test is a brand-new mechanism in synastry, meaning there are no studies yet to confirm or deny its validity. Classic synastry — the study of relationships through natal chart comparison — does, however, carry thousands of years of astrological practice behind it.
From a scientific perspective, skeptic and author Benjamin Radford told Space.com that the trend “plays into magical thinking and provides some psychological comfort,” but lacks any established logical link between the phase of the moon at birth and relationship compatibility. He cautions that people sharing successful “full moon” results on TikTok represent a skewed, non-representative sample — couples with non-matching results are simply less likely to post.
The bottom line: compatible natal moon phases can offer a playful lens for understanding your emotional styles, but they are not essential to a healthy relationship, nor do they guarantee soulmate status. Two people born under any combination of moon phases can build a deeply loving, lasting partnership.
Moon Phase Meanings and Personality Traits
Your natal moon phase — the phase the moon was in on the day you were born — is believed by practitioners of astrology to shape your emotional temperament, your intuitive responses, and how you show up in relationships. The moon completes its full cycle approximately every 29.5 days, passing through eight primary phases. Here is what each phase is said to reveal about your emotional personality and romantic style.
New Moon
Most people treat the new moon as simply a blank slate, but practitioners know it reveals something far more telling — a personality that craves stability yet secretly feeds on relentless optimism and the quiet thrill of new experiences.
Those born under a new moon carry a rare internal compass. They don’t chase attention; they build. Their determination and patient hard work quietly shape personal growth without needing external validation or loud declarations of ambition to prove their drive.
What makes new moon individuals magnetic is their emotional depth. They read the room effortlessly — part intuitive, part reflective — and their nurturing instinct means the people closest to them always feel safe, genuinely seen, and emotionally heard without withholding.
Romantically, they seek meaningful connection over convenience. Think less drama, more depth — a soulmate who matches their curious, forward-moving energy and is equally invested in growth, mutual support, and building something that actually lasts beyond the honeymoon phase.
Waxing Crescent Moon
Practitioners viewing the astrological sign through a fresh lens recognize this phase as the emergence of special someone potential. It represents the astrology trend of building reassurance within romantically charged daily adventures.
This natal Moon stage requires TikTok users to move beyond subjective theories. To meet evolving needs, one must remain sensitive to the influence of Cancer energy or the spicy drive of Aries.
When TikTok creators overlay a birth photo, they capture a viral moment of personality growth. This science-based exploration of moon phases offers clues for compatible partners seeking a soulmate connection during birth.
TikTok users have generated 18 million times the engagement by focusing on how a born individual seeks compatibility. With 147 million views, it proves that finding a special someone requires deep influence.
First Quarter Moon
The First Quarter Moon represents a pioneering spirit where taking initiative is non-negotiable. These ambitious individuals are action-oriented, often acting as a catalyst for change while remaining resilient during any sudden conflict or adversity.
A proactive nature defines this lunar phase, characterized by strength and a competitive edge. These independent souls exhibit determination, thriving when they overcome obstacles and tackle challenges that require a fast-paced, decisive problem-solving approach.
Balancing willpower and instinct, they seek growth through movement. This dynamic energy fosters a restless desire for building something new, ensuring they are focused on self-improvement while maintaining the courage to thrive alone.
In partnerships, they require active engagement and mutual goals. For a lasting bond, they prioritize directness and loyalty, avoiding complacency to ensure the relationship remains a source of inspiration and constant evolution for both.
Waxing Gibbous Moon
Practitioners recognize that waxing gibbous energy signals a unique relationship-centered focus where balanced intimacy thrives. Beyond a viral moment, this phase governs those who are equally invested and fully present during meaningful conversations.
This knowledge is a gift, offering insights into a nurturing soul. While TikTok users chase clues for soulmates, your reflective nature ensures you are unafraid of emotional depth or genuine emotional mirroring within relationships.
An analytical approach helps you process the inner world without withholding. You meet a partner’s needs through loyal and generous support, acting as a connector who provides reassurance during daily adventures and challenges.
Instead of subjective theories, consider how your values-driven spirit seeks a harmonious relational bond. Your wisdom allows for manifesting a powerful connection with a special someone, creating a complete circle of trust and astrological growth.
Full Moon
Individuals born during a full moon emerge as nurturing, confident, and expressive souls. These leaders feel lucky while manifesting success, yet they occasionally act as drama magnets because their emotional world is so complete.
Staying calm under pressure makes them successful, though they cannot participate in the completing-the-moon trend traditionally. Since they are already complete, their contentment stems from completing others through a deep understanding.
A soulmate for these nurturing types must understand their expressive need for communication. In relationships, they are willing to nurture a bond that feels ideally suited, mirroring what many practitioners describe as a classic soulmate pairing.
Whether with a lover, spouse, or best friend, they seek mutual understanding. This classic soulmate pairing transcends a TikTok trend, focusing on a healthy relationship where one in eight people find destined harmony.
Waning Gibbous Moon
The waning gibbous individual acts as a natural connector, bridging the gap between internal reflection and external growth. They prioritize meaningful connection over superficiality, often acting as a nurturing force within their social circles.
Harnessing a deep understanding of the lunar cycle, these souls possess an internal standard of refinement. They aren’t young at heart in a naive sense, but rather through a spiritual commitment to self-development and healing.
In relationships, they avoid hyper-analysis, seeking to surrender control and embrace presence. This purposeful energy attracts partners who value steady growth, allowing the relationship to blossom through perfectionist attention to shared emotional needs.
As a connector, they learn to let go of doubt, becoming capable of intense bond formations. Their experience teaches that partnership thrives when detail-oriented care meets a willingness to nurture each other’s spiritual bond.
Last Quarter Moon
Navigating a last-quarter lunar cycle involves honoring the closure required for spirituality to thrive. These practitioners act as problem solvers for friends, offering great wisdom during periods of withdrawal and introspection.
They serve as a sage within a great team, providing determination when relationships require rest or introspective solitude. This final lunar phase creates a spiritually fulfilling environment, prioritizing self-preservation over reckless-in-love antics.
Experiencing this intensity, one realizes that visionary souls often seek intimate closure from many lifetimes. Their intuitive wisdom functions as an out-of-the-world guide, helping family members learn to resolve any lingering karmic sadness.
Finally, staying grounded allows for shared visionary outlooks. This last quarter, energy isn’t dull; it’s a deep insight into personal growth, where independence and patience transform simple pleasures into a long-term connection.
Waning Crescent (Balsamic) Moon
As a practitioner observing lunar cycles, the waning crescent moon birth suggests an intuitive soul who values depth over fun. This balsamic moon phase reflects a certain spiritual reluctance toward attachments.
Individuals born now often prefer no-strings-attached interactions unless a profound new moon energy is present. Unlike the first quarter phase, they seek a quiet, internal resonance, moving beyond simple physical attraction toward spiritualism.
Navigating relationships requires acknowledging that these souls are natural mirrors. They reflect internal truths, often acting as a final emotional filter. Their presence serves as a cosmic bridge between what was and what will soon be.
Ultimately, this phase represents the release of outdated emotional patterns. They don’t just participate in trends; they analyze the underlying energy. Understanding their silence is just as vital as interpreting their rare, but deep, words.
Eclipse
Integrating the natal moon phases during an eclipse reveals a soulmate connection that transcends viral trend aesthetics. This astrological perspective suggests that waxing gibbous individuals find passion by refining their unconventional methods together.
A full moon occurrence during these romantic relationships signifies devoted partners who act as leaders. While drama magnets, their magnetism creates a dynamic duo with endless energy, balancing heightened emotions through expressive loyalty.
Those with waxing crescent placement become adventure seeker archetypes, utilizing relentless optimism to navigate challenges. Their curious nature ensures progress, while quietly managing any insecurity through mutual support and forward-moving energy in ambitious pairings.
The waning crescent alignment fosters introspective depth, allowing the release of old patterns. This intuitive state promotes liberating growth, where understanding and adapting transform a casual bond into a resolute, strong sense of self-realization.
Moon Phase Compatibility: What Happens When You Combine Two Phases?
Beyond which phase you were born under individually, professional astrologers also examine how two natal moon phases relate to each other — a practice rooted in synastry, the study of relationship dynamics through natal chart comparison. According to astrologer Dana DeFranco, your and your partner’s moon phases will fall into one of several angular relationships, the most notable being:
Conjunct (zero degrees apart, same moon phase): There is an inherent understanding and unity in this pairing. This couple will experience the same astrological transits simultaneously, which can mean double the harmony, but also double the intensity during challenging periods.
Opposite (completing a full moon together): This is the pairing the TikTok trend celebrates most — two phases that together form a complete circle, symbolizing unity, emotional fulfillment, and balance between two distinct energies.
Other angular relationships: Phases that are square, trine, or sextile to one another carry their own dynamic qualities, representing varying degrees of complementary tension, ease, and growth potential.
Keep in mind that moon phase compatibility is just one layer of astrological synastry. A full birth chart comparison considers the zodiac sign each moon occupies, as well as the interplay of Venus, Mars, the rising sign, and numerous other planetary placements that together paint a much richer picture of romantic potential.
Beyond the Trend: Other Astrological Compatibility Tools Worth Knowing
If you enjoy the moon phase soulmate trend and want to explore your cosmic compatibility more deeply, astrologers commonly recommend these additional tools:
Your Venus sign governs romance, attraction, and desire — arguably the most directly relevant planetary placement for understanding love compatibility. Your Mars sign reflects passion, drive, and physical attraction. Your seventh house in your natal chart is the house of partnership and long-term relationships, revealing the qualities you seek in a committed partner. Synastry charts, which overlay two full birth charts, offer the most comprehensive view of relational dynamics that astrology has to offer and carry thousands of years of documented practice behind them.
The moon phase soulmate test is a charming, modern addition to this tradition — and while it may not carry the same depth as classical synastry, it opens a meaningful doorway into understanding how your emotional nature, shaped by the lunar cycle at the moment of your birth, intersects with another person’s.
Frequently Asked Questions
What app do you use for the Moon Phase Soulmate Trend?
There are two popular options. The TikTok “Moon Phase Test” filter is built directly into TikTok — no separate download needed. Alternatively, practitioners use the CapCut app to crop a screenshot and apply the popular CapCut template that originally launched the trend.
Can you do the Moon Phase Trend with friends, not just romantic partners?
Absolutely. Anyone can explore this astrological trend — compatible lunar overlays can validate deep friendships, karmic connections, and classic soulmate pairings of any kind. Many TikTok users have used the filter with best friends, siblings, and even their favorite celebrities.
What does it mean if I was born during a Full Moon?
Being born under a full moon is associated with being lucky, confident, and naturally expressive — someone who lights up any room. Because you are symbolically “already complete,” you technically cannot complete the moon trend in the traditional sense, since your moon is already whole on its own.
What if our moon phases don’t make a perfect full moon? Does that mean we aren’t soulmates?
Not at all. Astrologers emphasize that two people born under any combination of moon phases can have a deeply healthy, loving, and lasting relationship. Compatible moon phases can offer interesting insight into your emotional styles, but they are not a prerequisite for love, nor a guarantee of it. Real compatibility is shaped by communication, shared values, mutual respect, and continued effort — not lunar geometry alone.
Where can I find my natal moon phase?
Free online moon phase calculators — such as those offered by AstroStyle (the AstroTwins) or MoonPhases.org — let you enter your birth date to instantly identify the moon phase you were born under. No birth time is needed, only your date of birth.