Don't sell yourself short sol... He's treated you like crap and he cheated on you (right?) and he's choosing to go through this divorce. ACTIONS SPEAK LOUDER THAN WORDS!! If he wanted to save your marriage he would have come after you.
You're in love with the idea of him... what you remember your relationship being. I made the same mistake. I loved the person I thought my H was, not what he is SHOWING me now.
You deserve someone who wants to be with you, better or worse. I know it hurts like hell that suddenly, he doesn't seem to want to anymore. But it's his loss. He's the one whose going to have to deal with the consequences of letting you go. You need to GET ON WITH YOUR LIFE. Make it wonderful for yourself! You're young and you have plenty of time to fall in love again with someone even better. I know it's hard to see right now. Hell, I have to give myself this pep talk several times a day, but you'll get there.
He won't be the last person you ever fall in love with. YOU DESERVE BETTER!!
My new favorite quote - If you can't run, crawl. If you can't crawl, find someone to carry you.
We'll carry you!
When you are happy as an individual, you are in a better position to determine whether a partner enhances your happy life or weighs it down.