Five years ago I married a man I loved. Three days after the marriage I realized I was pregnant. He didn't want the baby, so I had an abortion. A few months later he stopped wearing his ring and got together with my friend. So I was kicked out of my love, kicked out of the friendship- if you could have called it that- and she immediately got pregnant and moved into my house less than a month after I moved out. Now they have a bunch of kids, cheat on each other, I should be happy I'm not with him, but my hate for her, and only her, is such a huge part of my life, even five years later. And I'm sure she doesn't think about me as much as I think about her. I just don't want to live like this anymore, but she's around everywhere, friends with my friends and my sister...this hate is poisoning my whole life.
Unfortunately, hate does not give you a better life. You get happy by doing positive things for yourself, you just get more unhappy if you immerse yourself in hate. If you want what she has, you have to work for it. Try to find a man and get your own kids. One possibility is to move to another town and try to find a totally new life.