There is so much that goes into compatibility, however don't underestimate that Mars/Venus dynamic.
-Mars Conjunct Venus creates deep understanding and irresistible attraction.
-Mars Trine Venus is all about harmony and ROMANCE.
-Mars Sextile Venus is passionate, alluring, fascinated by one another.
-Mars Opposite Venus adds spice and fire.
-Mars Square Venus can feel fated or mismatched, love/hate dynamics, karmic push and pulls.
-Mars Conjunct Mars can't keep their hands off each other.
-Mars Trine Mars energize each other, inspire, rouse.
-Mars Sextile Mars love the drama with each other or never have any.
-Mars Opposite Mars make an intense pairing! Can be ride or die, eager acceptance, and engulfing flames.
-Mars Square Mars go after each other.
-Venus Conjunct Venus - love at first sight.
-Venus Trine Venus knew the other person was the one when they met.
-Venus Sextile Venus fit together like two puzzle pieces.
-Venus Opposite Venus may risk it all for their love.
-Venus Square Venus has love is all we need vibes.