How do you deal with absent parents?

Ashley • • 27 • 1 👼🏻 baby • 5 y/o💙👶🏽• PCOS

My son is almost 3 months old now and his father isn’t around. He has seen him twice since he was born - once at a day old and once at 2 1/2 weeks. He only agreed to meet him again at 2 1/2 weeks old because I yelled at him and called him a deadbeat because he doesn’t do anything for him and doesn’t make time for him but has time for his girlfriend and her family. He has canceled on seeing his son for his girlfriend even. Around 2 months I told him I was fed up and he will not see his son or hear about him anymore. It’s not like he asks to anyways but I wanted to draw a clear line. He had his girlfriend text me back saying they will take me to court. I’m not worried since he has not done one thing for his son, even his sister said he would not get anything. But how do you guys deal with absent parents? It frustrates me and hurts me so bad when I see him posting with her baby niece and her nephew and going to monster jam and hanging out with her every day, but not seeing his son. My heart hurts for my son so bad....

Here’s picture of my little cutie pie