However, my closest friend has been doing all he damned can to keep me here. Sometimes I hate him for it; it would be a lot easier to be able to die and know that I wasn't leaving someone behind that can't cope without me. But I also love him, and I know that he wants me to keep going for him, and that if I keep holding on to him and not letting go, then chances are things might get better. I'm living on that hope. So that's all good, when it gets bad I talk to him, he keeps me holding on.
But last night he said something which was basically "I know I'm being horrendously selfish, and that I might never understand how bad you feel it is to be you, but I don't understand HOW you can think about leaving me like this. The mere thought of you possibly wanting to commit sucide hurts me more than I can express".
I don't know what to do about that

So my question is, without completely backing away and isolating myself (which, lets face it, is my first thought), how do you cope with your suicidal feelings/thoughts/urges hurting the people around you?