This time you got it right, OP ^_^). Here are my comments:

* phone: you may have to try to find another way/more structured way of communicating. Some people can't stand the phone (me included), and sometimes you just have to accept that. For instance, in my case I never have my mobile phone with me except from 21h00 onwards, so my girlfriend can call me at those times. Try to find a solution that works for both of you.
* weed: that's a tough one. In general you can't win that kind of fight. Either you accept it, or you ditch him, or wait that he decides to stop by himself (which may not happen anytime soon). Don't waste your energy on that one, it's not worth it.
* as for being arrogant and immature: again, either you endure it or you ditch him. He'll probably mature with time, the question is whether you want to wait for that. On the other hand, don't let yourself be overrun by him, and call on his bullshit when he deserves it.