Best Online Bingo

Hey all once again!
So the deal is I've just started to 'be' with this guy, and he kissed me the other day, and yesterday, and today. Anyway my point is, when he kisses me we kiss for HOURS, and there is never any tongue. Ive sorta flicked my tongue over his lips once or twice and into his mouth and felt his tongue lightly, but nothing more.
Is tongue kissing perhaps considered something more intimate that you save for a bit further into the relationship? Or perhaps he just doesn't like it? Any ideas anyone?