Thanks everyone for all the feedback. I agree with everything posted and plan on filing very soon, like within next week or two. Spoke with my brother, who is going to loan me the money to get started. You guys are right, I was still holding out hope, still being a nice guy and giving her the Plan B she needs to feel safe.
Spoke with my sister last night for 3 hours, who has a psychology degree and is a licensed therapist. She also used to be good friends with my WW until a few years ago, when WW started down the road to crazyville. I got so much insight and good advice that figured I would share for others in a similar situation.
First off, my WW is definitely escaping from reality. She almost definitely still has feelings for me, probably even deep love, but the guilt of her betrayal and the realization of how much work would be involved to fix it are too much for her to face right now. It's easier to try and start fresh in a new situation. Eventually, reality is going to start creeping in, the guilt is not going to just go away, and she's going to start looking for another out. That may be yet another guy, but it's also the most likely time that she would come running back to me, begging for forgiveness. And I can't take her back. She will reach out in desperation but will not truly be ready to reconcile because she is still broke and has not honestly faced her own demons. There is a ton of guilt and unresolved feelings inside her, including the death of her mom just a couple of years ago, that she has buried and never dealt with. That healing has to take place before she is capable of being in ANY serious relationship.
I also asked if there was likely to be any sort of reaction when I finally start dating again. The answer: without a doubt. Whether WW still loves me or not, right now she knows that I still have feelings for her and believes she can come back any time she wants. Seeing me with another woman and realizing that I have actually moved on is going to be a serious blow to her ego. The fact that I want someone else is going to be hard to accept, and it's the other most likely time that WW may try to win me back, seeing her safety net or Plan B slipping away. Or possibly even finally realizing what a huge mistake she has made. But again, regardless of how she reacts, I can't take her back. WW has to go through some sort of bottoming out process, realize that she has problems and needs help to fix them, then actually do the work. I can't do it for her and I can't help her.
So there isn't any realistic possibility of us being together again for quite some time, certainly not until well after I have moved on, and now that I'm being honest with myself, why would I want to subject myself to that sort of pain again once I finally get past it? The possibility is so remote and the time frame so distant that it makes no sense to dwell on it at all. I need to focus on making me the best I can be and taking care of my 4 boys. The rest will take care of itsself. When I'm ready, maybe a year from now, I'll start casually dating again and hopefully find someone better than I ever thought possible.
My WW will always be a part of my life due to the kids, and I really do hope that at some point, we can actually be friends. I'm not there now and maybe will never get there, but I'm not going to shut down the idea. I'm happy for our history, the time we spent together, and so thankful for our 4 kids. I really do hope and pray that we all reach a point of true happiness, whatever that looks like down the road.
I'll continue to post updates, especially if things start to get crazy, but feel like I've made the tough decision and am ready to move forward. Thanks so much everyone on this board for the thoughts, insights, and great advice. Wishing everyone the best of luck in working through their own personal nightmares.