What to do? Using cocaine but friends tell me to stop.

[Msurfpro13]

swim has 2 very good friends, he has a car, a job, a good household, good reputation and not the best grades. swims friends smoke/drink, swim likes to drink/BLOW!! and swims friends have not tried blow, swim has done it a lot, but swims friends think swim had done less that he actually has. swims friends do not like that he uses, but they try to work with him. swim loves his buddies to death and values their thoughts and opinions, but swim also loves blow! he is not an addict, when he uses its usually in him room, in large quanities, and swim uses around his friends sometimes, but they usually know and confront him, and that just makes him feel worse. what should swim do?

tell his friends he will use occasionally, will stop cold turkey, or will use whenever he wants?

remember these are swims 2 BEST friends!
thankx for ur help-brewster