Deadbeat treats one kid better than the other

My sons dad isn’t around and hasn’t been around for five months. He quit coming around after he found out his new girlfriend was pregnant, didn’t even come to our sons second birthday party. The other baby was born two weeks after our sons birthday. He was too busy preparing for that kid to come by our sons party and see him.

I’m mostly over it all, me and my son are happier without him in our lives at the moment. We don’t even talk at all (his fault) and he doesn’t see our son at all. But i do occasionally send him pictures of our son just so he has them, and to basically have proof that I do try to involve him in our child’s life, he likes to lie to people and tell them that I keep our son from him so he doesn’t look bad.

Okay what hurts me the most is he is 100% there for his new baby but never was for our son.

It hurts me because I don’t want my son to grow up and see how he treats one of his kids better than the other, my dad was the same way with his other kids and it made me feel so bad about myself. Kind of like something was wrong with me. I don’t want my baby feeling that way..

but he really wants nothing to do with our son at all, I’ve literally begged him to be here and he won’t. I just don’t understand how you can treat one son, your first born like trash, but the other one like gold.

My baby didn’t do anything to deserve this at all...