Getting over your childs father?

My childs father changed completely when he found out I was pregnant (for the worse) and we broke up in March. We tried to remain friends and work things out, but it just isn’t working. I officially cut ties with him him tonight completely. Does anybody have advice on how to get over him? I feel like normal breakup advice just doesn’t fit, seeing how I’m carrying his kid and he’s stuck in my life for 18 years.