[Por_sha911]

Lee, sucks to hear this bad news. I imagine that since you genuinely loved her, knowing that you can play the field is cold comfort. Your heart hurts. I am sad for you that you have to go through that. I also hurt for her since she has no idea what a bad decision this is.
You weren't perfect. No one is. If you can say to yourself "I did the best I could" then there should be no shame or regrets. As someone else alluded to, you can't make someone else love you. They have to want to. If only one person is doing all the trying then it will never be good enough. If she wants to leave then the best thing you can do is let her go. Grieve a little while...you have that right. Don't make any rash decisions while the whole world is upside down. Avoid haters and people with poison attitudes. They want you to hate her or get cynical about love and commitment. That is a dark place. When things start to settle down a little only then start to make a plan. In the meantime, one day at a time.