Like Accuray said, don't beat yourself up, it is so easy for us to say don't do it, but when faced with the situation I really doubt many of us could resist. Again he probably left that note in plain sight so you could see it, right now it seems he is only using you. If you did more harm than good, only time can tell.
M 33 W 29 S 4 M 5 T 7 11/7/11 Separation, W moves in with parents 12/1/11 W: "IDLY, I'm not coming back, it's over" 1/7/12 D Bomb Dropped