I was rejected

I feel so hollow. This happened over a year ago. I felt completely better and got my confidence back. But recently something came up regarding this person and I am in hollow agony again. I feel silly for even feeling this way. I don't know why. I use to think he was an amazing person. I feel maybe like he just wanted something from me and that's it.
I hate the pain that I feel. Why does this feel worse than marriage pain. I don't want to feel anything any more