Firemanbud -- I'm glad to hear that you have a therapist too, you need somebody on the ground who's on your side.
I read the email you PM'd me this morning and have to apologize. I had a fairly long reply, but then my computer froze up (grrrrrr) and I had to leave to meet some people, so I'm just getting back to you. I wish I could remember what I said...
It is easy for us to be on your side because we're hearing your side, not hers. I have to use the email as "her side" and I have some big questions. One of them is that, if I read it right, she wanted you to take two jobs so she didn't have to work and could care for your children. Two Jobs? You did that for what she called "her debts"? That really sounded unfair to you. I'm amazed that you've got a good relationship at all with your kids if you've been working so much.
If that email was supposed to show her side, if failed for me. I didn't find much that was horrible there. You do sound like you may have a bad attitude to store clerks (Do you? You aren't a racist, are you?), but I'm willing to give you the benefit of the doubt. Everybody has bad days and I've yelled at my share of people behind the counter. I'm not proud of it, but it doesn't make me a bad person either. Everyday we try to be better.
I worry that Montana is right, sigh.
My advice: Listen to Jespah
, except I wonder about moving out. Your taking the initiative will put you in a stronger position. I just hate that she's got it all figured out: not taking your name, taking your money, blah, blah, etc. That doesn't sound like she's planning anything good.
Your wife may be right about some things. Maybe you are a jerk. You can change; it's silly to say people don't change, because they do everyday. But they change for themselves, not for others. She wants to be left alone... do that. Take care of your own "stuff" and leave her alone in the kindest, most friendly but very distant manner. Gather your strength. She isn't being so nice to you and you need to protect your own psychological health. Maintain and improve your relationship with the kids. Start now. Start reading to them, The Hobbit, if you've got it, something that will take them outside themselves. Lord knows, they probably need some comforting because they are witnesses to what you and your wife are doing to each other.
Consider this: if you two separated, you have as much right to retain custody of the kids as she does, maybe even more. She had an affair, doesn't have a great job, doesn't have a lot of time for them since she is going to school. Just for drill, imagine how you would manage if you had custody of the kids with no help from her, except monetary help (which you would be eligible for). Could you do that? If not, why not?
Okay, let's see if I can submit this before this stupid computer freezes again.
Katya's advice about documenting your feelings and what's going on is an excellent plan, both for future referencing and also to get it off your chest.
Good luck.