Please help mee... it would be most appreciated if someone could help with this?

ok so i think i made a mistake with this boy that i am dating. i told him at first that i didnt want him drinking cuz he is too young(16) and then we met this weekend. we went to go see a movie with him and my friends but after they were all pitching in for money of afterwards (kicking it at there house) so after the movie when i got home. i texted him stuff like you know that i'm here for you but for this to work there has to trust and for there to be trust there needs to be honesty. i know it wasnt a big deal for him to tell me at the time but not tell me its kinda not fair. i told him i hope he doesnt drink but when he does if he could tell me. and then asked him to say how much he is drinkin. sayin is different from doin and doing is different from believing. i feel like i was being overbearing but his older brother doesnt do anything about it. and his parents don't even know about him drinking and partying. NObody says anything !!!he hasnt been talking to me.