Stressed out.

So stressed out. Have my almost 3 month old baby boy, and live with his father. We aren't a couple but live together as friends who have a child. We've done nothing but fight lately. He's always been a cheater and I found out a month ago he'd been talking to all few girls throughout my whole pregnancy and till now. These girls are from different states and he adds them onto his Facebook. All the posts I tag him in of our baby boy don't show on his facebook. From the beginning he didn't want to be apart of this and his first reaction when I said I was pregnant, was fuck. I shouldn't have let him back into my life as now my son cries each time he leaves. Last time I've heard from him or seen him was Thursday at noon. He hasn't once asked about how our son is. He fooled everyone throughout the pregnancy thinking he had changed his ways each step from when we found out it was a boy, to birth, and the first few weeks home since I had a c section and couldn't do much. But it was all a lie. I am going tomorrow to get food stamps and to file for child support, since he doesn't pay for anything. My father bought all my son's furniture and my friends and family got everything else for him, from clothes to toys. I'm hoping that he just moves out and makes it easier on us so I don't have to find a place and move my son from the only home he knows. I know this is going to be a long stressful process, but I know that I need to do this for my son since he deserves the best. I am determined to create the best life for him and raise him to be nothing like the man who helped create him. It really baffles me on how someone can wall away from their child. Someone that they helped create, especially when their father did the same and he said he'd never be like his father. Not sure how someone can walk away from their own blood.