My friend's fiance was like that. I thought she should've canceled the wedding after the way he acted during her bachelorette party. He insisted it be a joint event with the bachelor party and then picked fights over everything she did. He called her a slut in front of everyone (meanwhile, she found condoms - which they didn't use - in his bag a few days earlier) and was generally a complete asshat. I would've been thrilled to see that notification.