I notice a lot of people don't take issue with the Xavier/pervert thing. I do, for 2 reasons.
1) If Xavier is constantly sleeping around or trying to find a new piece of tail, it honestly makes him look sleezey. As if he has no interest in any of these women specifically but is simply looking for a new conquest. I mean, he says he is "inlove with Jean" but has said the same about Emma, Mystique, Lilandra, his wife, etc.
2) It makes you seriously question his intentions and just what kind of teacher he is. It is just a bad move for the character.