undomesticatable

a young person usually between 25 and 30, predominantly male, who intentionally destroys committed relationships due to his relationship with the bar scene

Joe "Amy was the hottest girl you have ever dated and she would have done anything for you"
Mike "Well, what can I say, I guess I'm just undomesticatable"

New girl: Who's that, he's hot?
Bar Fly: Forget it sweety, that one is undomesticatable