By all accounts, he is exceedingly polite in real life. You won't hear about him doing a "Christian Bale" on TMZ.com. Nobody ever has a bad thing to say about him--except his ex-girlfriend who posed for skin magazines, Joanna whatshername.
Apparently he got pissy with her when she told stories to the magazines about how they would have wild jungle sex in the cabanas on the beach back when they were going out. A guy who wants to keep his sex life private? A celeb? The man's fictional. He must be. He doesn't dish about his present girlfriend, whom he's been with for 2 years. He's not interested in displaying his private life.