How to overcome my problem and become strong?

I was engaged from 6 months and my wedding was after two mounth. when i took the decision to be engaged bec i felt that this person is nice, responsibe, has a strong character. There was a problem bet the two family but really it wasn't our fault but their. my fiance didn't try to solve this problem so i decieded to end this relation but i have been shocked in him he didn't even try again to fix this problem. i thought he loved me. i thought that he will return to say sorry for this but this didn't happen. now i am trying to forget him after i was seeing him every day . i want to be strong. i am strong but everyday i think about him and about what happened and i think that he will return to say sorry bec i thought that he loved me.