Here’s 7 green flags to look out for when assessing your own astrology compatibility with a partner using the 5 personal planets.
While none of these green flags alone would likely be enough to hold a relationship together, ticking multiple is a good sign. In an ideal world you would tick all 7, but that’s definitely not necessary. 3 is a good start, and after that, the more the better.
Where you tick green flags can show which parts of your relationship are natural strengths, and where you don’t is an indicator of where your relationship might need some extra work.

1. Your Moon Signs Are Compatible
Moon sign compatibility is highly important because the Moon represents who you are when no one’s looking. It’s your internal world and need for safety, so when two people’s Moon signs are compatible, it suggests they feel safe, seen, and comfortable together.
There could be a familiarity here, or a feeling of ‘I know you’, which can help couples easily click, bond, and connect on a deeper level.

Maya Jama’s Moon in Scorpio and Stormzy’s Moon in Scorpio
Millie’s Moon in Virgo and Liam’s Moon in Scorpio (Love Island S7)
Catherine’s Moon in Pisces and Scott’s Moon in Cancer (Love Island S10)
To do this for yourself, get up the signs of your personal planets and your partners personal planets, and see if they’re compatible using the below resource:
2. Your Venus Signs Are Compatible
Compatible Venus signs suggest two people have the same ideals and are looking for the same or similar things from a relationship. It can make it simpler to have relationship talks, and you may find common ground around what your future looks like together with ease.
Venus is also related to values, so compatible Venus signs can suggest you value the same things - like family time, or independence.

Molly’s Venus in Cancer and Zachariah’s Venus in Cancer (Love Island S10)
Tiffany’s Venus in Scorpio and Brett’s Venus in Scorpio (Love Is Blind S4)
Chelsea’s Venus in Gemini and Kwame’s Venus in Aquarius (Love Is Blind S4)
3. Your Mercury Signs Are Compatible
Compatible Mercury signs adds an element of friendship to the relationship. This doesn’t mean they’ll friend zone each other (although it can do if there are no other green flags), but rather that they’re attracted to each other and they’re friends who make each other laugh.
These connections can also be mentally stimulating, and ensure you’re never bored around your partner.

Indiyah’s Mercury in Sagittarius and Dami’s Mercury in Aries (Love Island S8)
Whitney’s Mercury in Sagittarius and Lochan’s Mercury in Aries (Love Island S10)
Ekin-Su’s Mercury in Virgo and Davide’s Mercury in Capricorn (Love Island S8)