Compatibility Problem is a little excuse for extra marital affairs which can be removed, If your partner is not Compatible to you, you can make him/her like you, I know its also a tough task but not impossible,And What I think about Extra Martial Affairs is, IF the person Indulge himself/herself in many love affairs in his teenage, relationship becomes addiction to them and they keep on moving next to next...Some how it also depends on which Environment they are bought up.
I just wanna say kundali matching is not guess making...Its important, failures and success depends on person to person.