My dealers are my friends, and I wouldn't have it any other way. They give me good deals, and I make sure that they are smoked up, not every time, but enough. Also simple things like being their friend is a plus. Think of the guy who sold trees in SLC punk, they went to his house, chatted for a while and left. He just wanted to talk to people. In my experience, dealers are pretty frank though. If they want to smoke a bowl with you, they will make it obvious, if they want to chat, they will try and stick around for a bit. Just go with the flow. It doesn't hurt to offer extra money, or giving a portion of the weed back, or smoking them up. Remember they ARE doing you a favor. It maybe buisness, but without them you are fucked, so be nice.