relationship with the ex.

I can't handle maintaining a strictly friendship with my ex so he can still be around for his daughter and watch him be with someone else while im still madly in love with him. it's so physically and emotionally draining and i don't want to do it anymore.. for the next week i decided to tell him something came up and need space and blocked him because I'm just way to sad.. my depression and anxiety because im pregnant is too much to handle for him but yet his new girl constantly broadcasts how depressed and self conscious and anxiety and this and that she is and he willing to stick it out with her. I was in the closet about my emotions but yet I'm too much to handle and she's not.. but yet I have his baby and she's just hi sperm dumpster.... so done with this whole situation.. I should just take my daughter and we can both find a new man for us. this is the shittiest idea of a family to me