Missing an ex

I think I'm over my ex. Well I try to tell myself this. He and I are expecting a baby....and he has made it known he doesn't want anything to do with me romantic all and that he just wants to be around for the baby. This is what basically pushed me more and more each day to get over him. But sometimes I miss him even tho I know I shouldn't. Just sucks because I just want to have a normal sleeping pattern and I want my dreams not to consiste of just him....😕 I know I shouldn't be missing him but I do....