My Ex Boyfriend and I dated for 8 months. We discussed marriage and children in the long run. I thought he was it. He was getting ready to move away to another state for work though to start a business. We began going through a lot of stress trying to figure out what we were going to do. Finally I decided that I would move close to him and go to school so that we could still be together, but I refused to live with him until we were married. A few days after discussing these plans he called me up and basically told me we were over. He claimed we would never work long distance. I wrote him a letter (bc I'm better at expressing my feelings this way) upset about what had happened and he eventually wrote back. He claimed that he thought we could work long distance, but that because I was not christian we could never get married (which totally came out of the blue).We had discussed all of these isssues already and both had an understanding. After 3 months of being broken up I found out he is marrying a girl he has known for 3 weeks. He met her trying to get the loan for his new business. I don't know what to do. I had hope we would one day be together

Lola, we all get told all sorts of things that change when someone doesn't want us anymore.
Religion didn't matter when he was in love with you; he either met someone to whom it does or he's casting about for excuses.
I can remember saying things about my taste in men that went poof! If I liked someone who didn't have those traits.
Were you handling the breakup for 3 months until you found out he was getting married?
Is it possible that some sort of handwriting was on the wall about the two of you, and that's why he was planning to move away?
It sounds like he's not much of a communicator. Move to another state rather than explain how he feels.
My job: convince you that you are better off because of that!

I am so sorry for starts :(
But there are those times when the heart isn't ready to let go for what it once loved. And to me it sounds your heart doesn't want this man you got involved with, to leave. I recently also went through something similar it hurts, but there is always a rainbow after a storm. You are just on step closer to finding the man that will love you unconditionaly. And for this new "bride to be", they have not gotten time to even know each other, this relationship between them will most likely not las. And if it doesn't, you can go back to him, but I would suggest soeone for you that would not put you through so much pain.
I wish you the best of Luck :)

Basically there is nothing you can do. He has met someone else. He is getting married. You have no choice but to go on without him.