He cheated with my friend

I just got out of an abusive relationship, I felt angry, betrayed, depressed. My boyfriend cheated on me with my friend last year,he apologized and I accepted him back, I had to cut ties with my friend. Only for him to start treating me like a trash,llke I don't matter, although I ended the relationship last month but I still feel hurt, depressed,angry at him, myself and my friends. I would like to move on but it's been really difficult. I've lost a lot of weight, stuff I like no longer excite me, I feel worthless and I can't see myself going into another relationship cos I'm having trust issue. I've no one to talk to about this that why I decided to reach out to you guys.