I wouldn't worry about it. Ya know they say opposites attract. An' jus' cause y'don't like everythin' doesn't mean there's anythin' wrong. Y'won't always agree on things, that's just nature.
An' this is just a hunch from what I've heard from you but... I'm willin' t'bet he's still learnin' a few things about bein' in a relationship.