divorcee mom

Im currently waiting for my divorce to be finalised. I found out my soon to be ex husband cheated on me multiple times with prostitutes in June, and it was not easy ever since. Up till today, i still cant grasp the idea that he cheated and found a taiwan singer as a gf so soon. She is even living in his parents house now!!!! and the idea of the interaction she has with my daughter is very uncomfortable for me. and up till today he still doesnt feel it was his fault, he still talks rudely to me and says not nice things to me... I dont know why but i get very affected by this. anyone went thru similar experience ? How do u cope w the idea that ur ex partner has a new gf? and spending time w ur LO?