Sad And Depressed

I left my boyfriend who I was engaged to be married and I was pretty happy to be with him but he did so much to make me feel very upset. He even made me cry all the time. I couldnt be with out him now I look at it I am depressed and have tried to kill myself but I have found a therapist to help me and that is working but now I feel like I cant trust anyone anymore. He also told me that if I dumped him and stayed single he wouldnt date me ever again and I told him I wasnt going to be the one to be single but fool around with guys. I have been sticking to my word and now everytime I call him to get my stuff back he always hangs up on me and I need it back because its not his

i dont know what to do anymore I feel like it was all my fault for everything happening and I really need some advise on what I could do