Sorry to hear that too, Mo, of course.
However, is it possible it really didn't happen? That he's lying to you?
Even if not, as other have said, don't let it be your tragedy. This git had many MANY chances to officially make you family, and failed to do so, because he was being all Mr CleverBugger holding marriage over your head. I've no sympathy for him at all.
Take care of yourself.