OK, rather than let this drop too far down the list, shall I share the little bit that I know.
I think it's Someone Saved My Life Tonight by Elton John (lyrics by Bernie Taupin, but I think it's about an event in Elton's life), although it's not about a suicide, but, rather, a metaphorical loss of life. Anyway, that meantions a Sugar Bear (who is the 'someone'), but I don't know who that was.
Someone might be able to pick it up from there (assuming I'm right so far).