Four said it pretty well.

What I think is, if you meet someone with a 75% compatibility, it could be as good as it gets, as statistically it could take you several lifetimes to find a >90%. In this lifetime, that guy could be in Mongolia and 30y older or younger than you, or could have even reincarnated as a woman. Work with the 75% guy. But, I know that if we are destined to be with someone, we alway come back close enough to meet and have a relationship. Just, it is never meant to be a heavenly one. Generally, in order to find yourself back here, you've got thing to work out, so there will be stuff to iron out, and someone you have a perfect time with might actually be a time waster and you might have to come back yet another time. Don't run away from the difficulties, it makes it worse in the long run.