Are you compatible with your partner? Check your moon phases.

The moon is romantic. Perhaps you know of its connection to love by the Eclipse Love Story, a tragic tale of the moon falling in love with the sun only to be perpetually separated by time. Or maybe you're more of a Phil Collins fan, connecting the moon to his 1996 hit "The Same Moon," in which he asks his lover, "Are you looking at the same moon?" There's also that saying we've all seen etched into metal bracelets or on the back of a heart-shaped pendant sold on Etsy: "I love you to the moon and back." Now, people have found a new way to romanticize the moon through the latest TikTok trend.

Users on the app are checking the moon phase for the day they were born and comparing it to the day their partner was born to see how well they fit together. There's a trend in which two moon phases slide together — one from the top of the screen and the other from the bottom — until they meet in the middle. If your moons are a perfect fit, you're meant to be; if not, break up with your boyfriend or something.

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There are a few ways you can do the moon phase trend yourself. The easiest way that involves the fewest number of downloaded apps is to go to phasesmoon.com. From there, navigate to "birthday moon" in the main menu. Then, you'll be prompted to put in your birthday along with your partners' birthday, and it will show you a video of the two moons meeting. Simply screen record the video, clean up the recording, and post it to TikTok. 

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Most of the videos on TikTok, it seems, are using a CapCut template, which involves downloading CapCut, googling your moon phase and your partners' moon phase, and downloading photos of those phases to your phone. Now, navigate to the moon phase template on CapCut, and put your moon phases in and add in the text of your and your partners' birthdays. It doesn't look like there's a specific song tied to the trend just yet.

Moon phases don't automatically mean anything about your compatibility, but the phases do directly correlate with your astrological signs. And some people definitely tie zodiac signs to compatibility, so do with this what you will.