I have no problem with a character who’s emotionally abusive or sexist or whatever. That kind of stuff can lead to all kinds of interesting RPs and relationships. However, when the player defends and justifies their character’s emotional abuse or sexist remarks, can’t understand why the behavior is socially unacceptable, and blames other characters for reacting appropriately (ie getting mad, calling them out, not wanting to be friends anymore) … NOW I have a problem!
A character is a character and I reserve the right to liking or disliking them the same as I would any piece of fiction … but when a player, a real living human being, talks like that kind of behavior is perfectly justified and acceptable, excuse me for being put off, offended, and kind of grossed out. :\