(((hugs))) What a diffcult situation! I'm sorry that you have any regrets.... but you are the wiser for the future. Learning can be hard at times. I'm glad that you didn't go ahead and marry and then be suffering through these feelings anyway...
Give yourself time.
A two year committment is a long time. It sounds like you feel somewhat used by this guy.
I'm sorry you moved and changed your life for him and now he is no longer in the picture. Maybe the right person is in that area...and you would never find him if you hadn't been through this?
Time to focus on YOU now... do things that make YOU feel good and better about yourself. Relationships do end. I'm sorry you had to experience this.