Hello Still Around,
I know exactly how you feel and have had that happen and is still happening to me this day. The only thing I can think of is that it scares them and it's such a taboo subject they do not know how to support or understand us. I say cherish the three true friends and grow and educate them. Remember that we had not shared either and these things take time. When I see the "ghost" friends I call them, they act like nothing happened and think I am the same old outgoing person and I accept that and continue on my way. This does not heal fast like surgery and they do not understand it.
I was an awesome friend and it's their loss.
This is not our problem, it is theirs.
Stay strong my friend and I hope this helps.