Relationship trouble

I've been with my boyfriend three and a half years and we live in different cities. It has been difficult but for the most part we have had a wonderful relationship. However, my boyfriend is  stringing me along now and I don't feel any trust towards him. When I talk to him he wants things to work but the distance it's so hard on me. I'm tired of always feeling like he doesn't come around more because he doesn't like me. He gives me such mixed signals. I feel like even though breaking up seems like a nightmare it is what I have to do. I am sooo scared, I won't be able to find someone to love me the way I felt he did. Any stories on how you made it through a bad break up?