I get that most Disney characters are exaggerated when it comes to their emotions- people fall in love IMMEDIATELY, witches want to kill young women for being prettier than them and there seems to be no problem with 15 year old girls marrying 21 year old boys.
Don't even get me started on her kleptomania and hoarding.
He is not only constantly looking at himself in the mirror, but he also is so selfish that he is telling all the girls in town what to do- he is baffled when Belle won't marry him simply because he tells her to. How dare she?!