Worst feeling in the world is seeing your ex getting married

We had so many dreams. Of where we would travel to. That we would walk on the beach in Barcelona, holding hands on a moonlit night. Or how we would hug and kiss each other on a gondola in Venice. Or the names we would give to our baby. Or how I would always wipe away her tears and make her laugh no matter what. All in vain. All paper dreams. She left me because she was not sure that I would stick around. And now she is getting married to somebody her parents fixed for her. Have never felt depressed like this. It is excruciating, hollow, gut wrenching. Feeling very worthless and unloved. I can try to concentrate on work to forget this, but this will take a long time. FFS, don’t ask for TC.