Live with him as if he were a houseguest. You have your own problems to worry about. If he asks you why are you seemingly so "cold" tell him that it's because you have more important things to worry about than him, like YOUR HEALTH.
Remember see him as little boy and you the adult. Don't enable him. He's got to do things on his own. If he's kind and compassionate to you, then by all means accept, but don't go overboard. This will show him your newfound independence and shield your heart in case he bails again.
Keep concentrating on yourself. Keep saying to yourself...he's just a roommate. Don't tell him everywhere you're going or everything you're doing continue to live your life as if he wasn't there.
And by all means, DO NOT go to bed with him. You don't need to be hurt again so soon.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.