trust issue. i dont want him to break up with me! please help anything will do!?

[MarissaHorror]

So they guy i really really like finally asked me out. he is the kinda guy who all the girls want. unfortunitly he is into hardcore drugs ( I HATE it) but i like him so much. so far i have been very very paranoied thinking he is going to break up with me. i guess you could say i dont trust himm, valentines day is coming up and i want to do somthing special. i dont know what to do i want to prove to him i can be the best for him before i ruin it all. so help please. i would appreciate no negitive replys, thats not what im here for, that you!