Im sorry ,
I dont have much advice for you except , love and live the best you can regardless of who is in youre world as you can control only youreself and no one else.
Listening to my sister and my best friend and other women though most the time Im glad Im single , even as a single mother. I woudnt want everything in my home and everything I do or dont do to be judged condemned and ridicualed and my son though he will have issues im shure becuase his dad left and never has any intrest in meeting him is better off I think then liveing with two people that fight constantly ect.