You really don't need to be focusing on the AP. While the guy is clearly a scumbag and a snake it's clear who the problem is. He doesn't give a shit about hurting you, he doesn't give a shit about your wife, he doesn't give a shit about your kids. He just wanted a piece of ass and he got it. He didn't make any vows to you. Your wife did. The AP didn't betray you. Your wife did. The AP owes you nothing. Your wife does. Going after him is a waste of time and is just going to make you look foolish. That acrimony you're feeling towards him should be for your wife.
If I were you I wouldn't even bother going to the MC counseling session. You should be speaking with a lawyer. I'm all for giving R a shot but after reading this entire thread it's clear you've been spinning your wheels while your wife at her best gave you nothing but nice sounding words and a letter.
She's not going to do anything to help you, your marriage, or your family if it's too inconvenient to her own wants and desires. That should really tell you where you stand.
Exposing and filing for divorce closer to D-day from what I've seen is probably the biggest factor in getting a spouse to feel remorse, out of the fog, and motivate them to work on the marriage. Unfortunately your wife really hasn't had to face any consequences from you whatsoever for her affair. At this point it seems quite obvious she didn't have much respect for you but letting her behave the way she has lowered that respect even more.
I'm not trying to pile on you, but you really need to grasp that your approach to this situation has not helped you much. Even now I think it's possible for you to reconcile but as someone stated earlier "You have to be willing to lose the marriage to save it". As long as you keep acting out of fear: fear for your kids, fear of divorce, fear of driving your wife away, etc then even if your marriage does someone last (which it probably won't) you'll be miserable and your wife isn't going to change for the better.
In your situation I'd recommend that:
1. You skip the MC session. I don't care if you can't cancel it or not or if it's paid for. MC has been a waste of time in your case because your wife obviously isn't remorseful. Not showing up sends a strong message that you've reached the end of your rope.
2. See a divorce lawyer or two, especially if you can get free consultations. Honestly I always feel this should be done as close to D-day as possible. Doesn't mean you actually have to go through with divorce but you can get a feel for your options and many times separation papers or outright filing is enough to wake a spouse in the fog up and motivate them to want to work on the marriage. As I said, your wife has faced no consequences besides exposure and all she's giving you in return are words and heart felt letters.
3. Start the 180. Not to get your wife back, which is not the point of the 180, but to get yourself in a healthy emotional state and prepare you if things don't work out. It will also help because it sounds like you wear your emotions on your sleeve, which isn't necessarily a bad thing but in your current situation that can cause a lot more harm than good.
4. Think about getting on anti-depressants and read No More Mr. Nice Guy if you haven't. It's a PDF file you can read for free if you google it. Besides your low self-esteem you sound pretty co-dependent. I wasn't surprised at all when you said your father left when you were young and you were raised by a single mother. I've seen too many good men in the same boat who treat their wives great yet let their wives walk all over them because they're afraid of their kids being in single parent homes like they were.
5. I'd stop talking about your marriage and the affair for the time being. There's no point because there's only one of you who seems legitimately interested in healing your relationship for the sake of your marriage and your family. And it's not your wife. I'd limit any conversations to the kids, living arrangements, and once you speak to some lawyers separation and divorce. If she tries to bring up any other subject tell her you're not going to discuss it or just walk away.
6. You should be carrying a VAR on you at all times. Your wife comes off like the type who would be willing to file false domestic violence charges. And believe me that can REALLY make things difficult for you. I don't care how well you think you know your wife or what you think she is or isn't capable of. I'm sure at one point you never thought she'd cheat on you. Get one ASAP.
Again, I'm not saying there's no chance for reconciliation but you really need to start playing hard ball if you want a shot at saving your marriage. And if you can't, then protecting your emotional and mental health so you can be there for your kids.
[This message edited by JS84 at 3:35 AM, July 11th (Monday)]