In any interviews I've seen with her, she seems nice. I think her biggest problem is she's become "J.LO", with the singing,acting,fashion,make-up etc career, and it doesn't give her any time to figure out who "Jennifer" is. That seems to me to be more the reason why she bounces from guy to guy so quickly. It seems as if she's inlov with the idea of getting married(gown, wedding,publicity etc) rather than the idea of being married.
I do kind of wish she'd get some therapy regarding why that is the case. I do think that a person should learn from previous mistakes. I also think that the end of a relationship needs to be properly grieved, because if it isn't, eventually it comes back to bite you on the butt. Getting divorced within a year after you get married says to me that you shouldn't have gotten married in the first place. As I recall, her first marriage lasted around a year too. Both people obviously missed some "warning signs" that they should have picked up on.