Hmmm.
It always sucks losing someone you love, or are still in love with. I am in a situation right now with my girlfriend or now I should say ex-girlfriend, back and forth with her for the past 6 months. I love her to death. Its come to a point where I have to face that we just don't click anymore. My case not being half as serious and there aren't any kids involved, but I feel that the only way I could move on right now is if I disappear like go away for a month and just forget and come back with a new mind, refreshed and ready to continue and live my life. Everything I do reminds me of her, everything. Whenever I have time to sit and think, I think about her and what I could do to make things work out. The possibilities are endless. They circle in my mind over and over. "Maybe this, or what if that. What about that time?"
Listen life isn't over. What has happen has happened. It happened for a reason, and you might even be better of this way. I guess my best advice for you is to stay strong. It gets so hard sometimes to let go. It sounds like you love her and want to continue, but she wants to move on for whatever reasons. If you have relatives or friends you are close too, spend some time with them.
Good Luck,
John G.