Not replying to all his messages and "going dark" seems to be making him realise that I won't always be there for him as a fall back plan, but I'm scared i'm taking it too far. Sometimes I'm so angry at his selfishness I get angry and short in my responses to him. I try to be civil but I'm certainly not acting like a friend which I guess I should be? I just dont want to be his door mat. I try being a friend and it seems to get me nowhere. It's almost like I'm making it easier for him. I don't know.