Hello, I'm really sorry to hear about your heartache

It sounds like he might have afflicted himself with some jealousy or envy upon realising you'd married a friend of his, perhaps he felt a bit foolish too considering he didn't know about it all this time. My opinion based upon what you explained is that he's selfish and inconsiderate of your feelings. If he truly cared he wouldn't have dismissed you out of his life like that, so I agree with the other two responses that you're better off without him.
I'm wondering, how often did you think of him while you were with your husband? Did you still have feelings for him during your marriage, or was it only after you broke up with your ex that the feelings came back?
As far as the pain you're in at the moment, I know it's so cliched to say, but time really does heal. It may take another 6 months to a year, but try your hardest to keep your mind off him. Try joining a community group or use a social networking site to make some new friends, and one day something inside you will click and you'll think 'why did I even like him in the first place?' That's how I tend to get over my heartaches, and it always seems to work for me. I wish you all the best over the coming months and hope the right man enters your life sooner rather than later.
x