That must be painful, I'm sorry you're going through it.
-How about remembering/focusing on the fact that he does NOT feel the same way about you--if he did, you'd be together, no? (and his wife and kids probably devistated...).
-Realize that he will Never, Ever be there for you for the special times, the holidays, the times you may need him, and that's his choice. The time he did spend with you was likely completely at his convenience, yes?
-Make a conscious decision/effort to think about other topics/get involved in an activity whenever you find your mind wandering towards him (kinda like quitting smoking, I guess).
-Focus more on the person you're seeing now.
-Lastly, I recommend you remember this heart-rending pain as motivation to not put yourself in this position again. Pain usually is there to teach us something (or at least, it's a positive way to look at/deal with pain).
I hope that helps. I also have a question for you, if you don't mind...
Did you make an effort to not allow yourself to get emotionally involved, knowing he would not leave his family? Or did you just throw yourself into it, letting the chips fall where they may?
I really, really hope you get past this as quickly and gently as possible...I wish you good luck, and better choices for the future.
