Except in the real world you have to do a good amount of coke for a while before you get 'addicted'.

There are plenty of people out there already willing to buy coke, I seriously doubt many drug dealers are handing out free grams of yay 'recruiting' people so when they get addicted they can all of a sudden turn around and say "HAHA you addict, now you're gonna have to PAY for it!"

Perhaps he has a good connection, either way just practice self control.