I'm sorry you are feeling alone these days. I hear your disappointment with regard to your friend not being available for you. I went through a very similar situation with my GF who was with me and supported me the entire 36-hour period after S. left me - after a few weeks she suddenly didn't return my e-mails, calls...
It is painful when a trusted friend suddenly seems or is unavailable. In the case of my friend, she was very busy at work, had a new boyfriend, was trying to move, and finally through my haze of pain I realized that I was being a REAL bummer to her, and desperately needy, and I probably would have retreated from her a little under the circumstances, too.
Just as our partners need cave time, so do our friends.
Stellar DBing on your part, by the way, by being so casual in the wake of the EX-HUSBAND comment. Not to play Let's Speculate, but he could have been trying to gauge your reaction.
