He moved on after a week and I am still hurt by it

My ex boyfriend of 6 years dumped me for his coworker 3 years ago. I had uprooted my life for him. Left my city and state, left my family, friends, hobbies, work just to be with him. We were long distance for 2 years until he gave me an ultimatum. I didn't hesitate and left everything behind because I didn't want to lose him.

4 years later he found a new job and met someone there. He would talk to me about her very often but he said she had a bf. I was never a jealous woman so I didn't pay attention to it. After a month of working at this new place he decided to end things with me, knowing I was all on my own with zero support system. He just said he was no longer attracted to me because I had gained weight and he wanted to be with someone that is not fat.

He kept "checking on me" but would always tell me how fat and ugly I was and how unhappy he was for so long. I decided to go no contact.

It only took him 6 days after our breakup for him to start posting pictures with his new girl. He moved in with her after 2 months into knowing her. He never moved in with me, we were neighbors. He moved into a different city with her and left me behind with his mom as a neighbor.

I have never felt so abandoned and betrayed in my life. I am in a very loving relationship but I still cannot get over this feeling of abandonment and hurt. He is still with the girl he left me for and it just hurts because I thought he was my forever. I am really really trying to give my all in this new relationship but I am afraid that what happened with my ex has seriously damaged me forever.

Sorry, I just needed to vent. I heard a song we really liked to listen to and all the negative feelings came back.