I need advice

My mother and best friend have both given me some good advice that I will follow, my child's father walked out on our son and I believe for a female I made it clear I didn't want to be with him but that's no reason for him not being a father to our child he looks just like him which makes me hurt even more you know, he never came to the hospital the 3days we were there and come to find out he's in Texas with a female, I can't eat and I can't stop crying I'm trying to be strong for me son I never thought he would do me out of all people his son, this hurt I feel I just want it to go away so I can focus on being a mother and getting my life on track and please don't judge me