Roommates

Be truthful with him and tell him everything you said here. It doesn't really matter if you hurt his feelings, you don't like him anymore anyway. Also be firm about it. If you wanna move out, tell him that you're moving out when the lease is up and that while you both are living there he's gonna follow the rules until you leave. That means smoking, food, dishes, and being fucking friendly when you have people over. Use examples of what he's done wrong, and back them up with the rules you laid out before moving in.

If you feel like it, then follow up with how he's been acting has all but destroyed your friendship with him, and that it pains you to have to talk to him like this.

BE FIRM. BE TRUTHFUL. BE DIRECT.

Jam it back in, in the dark.