How to deal with an ex bestfriend being mean to you?

This dude is nothing but a childish pot head. He is being immature and you are way out of his league. Leave him alone since he doesn't have his own stuff worked out. Since he can't treat himself well, he'll never treat you well. The sooner you leave this dude alone, the better off you'll be. Move forward with your life and don't look back. The next time he sends you a text message or calls you, don't respond. You can use that time to find somebody better instead of talking to this wannabe childish pot head. You do not want to be friends with someone- or be in a relationship with someone- that is doing drugs and making irresponsible decisions. Good luck.