He's being manipulative and saying that I am stuck with him. I don't really know how to leave this situation.
I am the only one working from home and taking care of our two toddlers. I payed his way through half of his undergraduate degree, while I finished my undergraduate degree, and his master's degree.
He went to a therapist for about 7 months that practically told him he did nothing wrong and that I would be the one that was wrong for leaving him. I don't know if it is gaslighting or what it is, but I keep getting told all these things by him and I'm starting to feel like I AM the bad one for wanting to leave.
He keeps saying that just because he didn't have sex it isn't that bad. (Although they did talk about masturbation together). I understand that, but I can't handle it. He also has been addicted to porn for a very long time. I found porn saved in his photos recently. There are practically no photos of his kids or me in there. Just porn. We have sex 2-3 times a week and it's just disturbing to me that he can have an emotional affair and watch porn all the time. He recently admitted that he still misses the woman he had an affair with and it's just annoying that they had two months together and he got to pretend to be someone else and make plans to run away just for him to expect me to be completely faithful and be happy with him. He was hoping said woman would return to him. Where does that leave me? Just waiting for her to possibly return and then I have to deal with him leaving me? It just makes me feel really uncomfortable and it's already hard to trust him. Nothing has really changed over the last 8 months even though he's promised a million things will be different. I feel like I have given him the benefit of the doubt for so long and that no amount of change on his part will ever allow me to even like him again.
I don't even know where to begin with divorce and he definitely won't be cooperative. I've been trying to get him to be reasonable with me and file for divorce together since September. I've tried asking him to leave and find somewhere else to stay, but he always tells me he has no money. It's really hard to pack up stuff for myself and my toddlers and leave home with all my computers and things I use to work.
Is there like a checklist of items I should do in this situation? I don't know how to get out of our lease or pack things up on my own or any loose ends like that. I'm working 50-60 hours a week on top of taking care of our kids and I'm so exhausted that I feel overwhelmed by any extra thing. My family all lives outside the state we live in. They aren't super supportive so I don't have them as an option to help take care of kids or anything like that.
Any advice on where I should begin this process?
Edited to add: He had a different therapist that diagnosed him as manic depressive. This therapist was female and he really "bonded" with her. She had to move states for whatever reason and he lost it. Cried for 3 days and wouldn't talk to me. He has often used ignoring as a form of "punishment" for me when I did something he didn't like. I've been really confused for a long time. There's so much that I could talk about but it's exhausting because it doesn't all make sense.
While he was with the woman he had an affair with he would come home crazed and seemed like he was hallucinating. He tried to commit suicide every time they tried to call the affair off. He's obviously mentally ill, but I don't know where to let the mentally ill stuff go and just be emotionally safe myself.