I just need to vent..

I’ve made posts about my break up before. It was a very long term relationship. Two kids involved. We were still living with my kids dad but he literally went to some girls house before I could even move out. Said he didn’t fuck her but I found out he lied. And it really hurt because the night before he went to her house, we had sex (quite a few times actually) and before you guys say I shouldn’t have been having sex with him, we have been together for 10 years. I didn’t want a new body so of course I’m going to have sex with someone I know and love and am familiar with. He promised he wasn’t sleeping with anyone else. But anyway. I moved out the day he left to hang out with that girl. Found out he also didn’t have work the next day. So instead of having his kids for the night and next day, he was spending time with this girl. I haven’t brought up that I know he had sex. It’s not any of my business, he’s single. But he hasn’t even called to talk to our kids. Hasn’t texted me or anything. Which is pathetic because I know he’s texting this girl and whoever else. My kids were so excited to talk to him last night but he didn’t answer any of their calls or FaceTimes. And it broke my heart. I still haven’t heard from him. He has his head up his ass right now. I know he’s going to regret leaving me and not trying to work on our relationship. I was more than willing to do it. He tore my family apart and I don’t think that’s something I can forgive right now. He’s only thinking of himself and pussy. I feel like a shit mom and I’m having suicidal thoughts. I don’t feel like I can give them the life they deserve or need and it fucking hurts. I needed him by my side for this life