I’m having a hard time processing

How you can spend 10 years with a person and it’s so easy for them to ignore you. It’s been a month of no communication and we have children together. This makes me never want to fall in love again. Crazy thing is he showed me who he was years ago but I still forgave after many things occurred. Even when I don’t want to speak to someone I won’t ignore them I simply tell them I don’t want to talk and I will reach out when I’m ready. I could text him that it’s an emergency and he still won’t respond or call back. But watch when I really stop trying he will try to come back. He’s 36 years old and still playing games like this. Things are extremely hard on me by myself with 3 kids and inflation. He’s not even sending money to help. I’m hurt and pissed TF off

Edit: He doesn’t want to talk to the kids or talk about the kids either. I’ll get over this I know but I do feel bad for my children because they love their father and they don’t understand why he won’t talk to them either