Most Helpful Guy
He's exceptionally bitter towards you and the "relationship", whatever it was, and obviously still has feelings. The difference between someone who is over a relationship and someone who isn't, is indifference and the absence of emotion. He's clearly not absent of emotions and still mad you for rejecting him.
Most Helpful Girl
hence the word drug addict. he needs rehab. the drugs are not working well with his brain. you need to stay away from losers like him