I have more time and can answer your questions from my own perspective.
Not only that, but had I not found out on my own, how long would this affair have gone on?
Probably as long as either of them were interested in keeping it going, i.e., not moving onto another AP to fill the void and add "excitement."
He has already admitted he planned on never telling me.
This tells me he is either a serial cheater in the making, or he already is one. The fact that he never planned to tell you tells me he was going to do it again, as long as he could get away with it. That whole "getting it out of his system" crap is just that. Crap. He was just trying to placate you by saying that. He likely had no intention of stopping.
I know my husband is resentful because of "everything he did for me" and the fact that he's now willing to "do anything" to fix our relationship. But what about the the 6 months he was cheating? Why couldn't he do everything in his power then, instead of starting a whole new relationship?
There absolutely is a time for "too little, too late." If infidelity is a dealbreaker for you don't apologize for that fact. You are entitled to have your boundaries. He is also bound to respect them, even if he doesn't agree with them. That's when you decide if it is incompatible with marriage. His "resentment" speaks volumes. If he was truly remorseful, he would NOT be resentful and would, in fact, be willing to move heaven and earth to give you what you need to heal. He's resentful because you are unwilling to rugsweep. That is a huge indicator that he is not the least bit remorseful.
how do I/any of you dealt with guilt associated with leaving a cheater?
Try to look at it objectively. What would you advise a daughter, sister, best friend to do if they were in this situation? Give yourself your own advice and cut yourself some slack. List the pros and cons on a sheet of paper (be brutally honest) to help with your perspective.
The bottom line, if you don't look out for your best interests, no one else is going to do it for you. Find your self-worth and see if he is up to those standards. After looking at it objectively, you may realize he is simply someone that does not deserve you.
Do any of you regret leaving someone you love who betrayed you?
Nope. Not at all. Was it hard? Sure it was! We were together for almost three decades, and leaving meant starting over much later in life. I would still take that over the alternative (staying married to him) any day. Xhole does NOT deserve me and I put myself first for a change. No regrets.at.all!
Hang in there, Pink. This is difficult terrain to navigate, but keep posting and we'll help you get through it. There absolutely is light, life, and laughter on the other side, even if it does not seem possible to you right now.
[This message edited by SI Staff at 1:26 AM, January 12th (Sunday)]