question xx

Hey girls, 
I just don't understand if I'm in the wrong or what? 
Anyway, I broke up with my boyfriend on the 22/11/2016 and his new girlfriend is message threats say that she is respecting him, that he's not being cheated on with her and that if I keep in contact with him that I would find myself in a world that I don't want to be. 
But the bit I don't understand is I had feeling for, I broke up my relationship and started to see if there was a chance with the other fulla but his belief and that's made it so that he wouldn't fit in with my family so I didn't acted on it, I decided that I just wanted to be alone. After see my ex with another girl I realised that all I wanted was my ex but it was too late to make that happen. 
No hate please xx💋