First, great on admitting that you had a problem that likely affected your M. That was hard to admit, I'm sure.
Second, great on stopping. You will feel a lot better as a result. Without a lot of details (ask if you want 'em, but not completely relevant) I, too, turned a bit too far to tippling when xWGF was in her A with the married couple she left for. I, too, stopped immediately upon recognizing the problem. Again, good job.
As to what your W may be feeling - something, some perceived slight, some inner insecurity, combined with (I'm guessing here) a pattern of bad communication between the two of you to cause her to start distancing herself from you. It is likely that, if this is what happened, she feels badly about it. So she has to justify it to herself.
That's the "list" that you noticed. She's rewriting the marital history in her head to justify what she's doing, namely becoming emotionally invested in another man. She knows that that's wrong -but- she feels good as a result and so she wants to find any reason that allows her to allow it to continue.
At a certain point in this process it will have gone too far and nothing you do or do not do will alter that. I hope, for the sake of you, her, your kids, and your M that it hasn't made it that far yet.
There is a body chemistry that goes along with falling in love. When you find someone who interests you your body starts releasing dopamine whenever you interact with that person. Dopamine makes you feel good (source of Runner's High, I believe) and you start associating feeling good with being around the new person. This phase lasts about 6 months and then the dopamine pumps stop pumping all of the time. This is the "Lust Phase" of a relationship.
Next, oxytocin takes over. This is chemical that is sometimes called the "Love Hormone", but should really be called the "Emotional Enhancement" hormone. When we're around people having a social interaction with them certain conditions cause oxytocin to be released, increasing the degree of feeling. So, if your emotional reaction to the person is positive then oxytocin enhances the positive feeling. If your emotional reaction is negative, then the negative feeling is enhanced. That's why being around someone that you don't really like can make them seem even creepier. The oxytocin phase can last up to about 3 or 3.5 years from the start of the relationship and this relationship phase is called the "Romantic Attachment" phase.
Interestingly, oxytocin is always released after about 20 seconds of physical contact. It will enhance whatever emotion the subject is feeling during the physical contact. Google the phrase "The 20 second hug". Here's a tip - If you can get a positive emotional response from your W then suggest that the two of you hug for a bit. Don't get all handsy, just a close hug while you tell her how positively you view her. If you can keep that feeling and hug alive for 20 seconds then her body will release oxytocin _and_ if her emotional response to you is positive then that feeling will be enhanced. This will _not_ win her back automatically, _but_ it _will_ help her to feel more positively towards you.
The last relationship phase is called the "Long Term Commitment" phase. That starts about 3.5 years after the relationship starts. Neither dopamine nor oxytocin are pumping continuously now, -but- they are released during intimacy and intimate physical contact. This is why a healthy sex life is an important part of a long term marriage and also why hand-holding, and appropriate Public Displays of Affection (PDAs) are good.
Dopamine and oxytocin are very chemically similar to other addictive substances. This is now relationships form and why new lovers are so seemingly addicted to each other. They are really addicted to the "good feelings" from dopamine and oxytocin and those are released when they're around their love object. This hormonal override of normal thought processes is sometimes referred to as "The Fog" of an affair. The A partners are temporary addicts. Their thought processes are not normal.
As to outing everything right now, I withdraw that suggestion. I think that you should attempt to re-engage with your W. I think that you should suggest non-pastoral IC / MC for the both of you. I think that you two have probably dropped into a pattern of -not- engaging in purely emotional intimacy and really valuing each other - those things are hard to authentically with that much alcohol around.
Do not get me wrong - I do think that her reaction to all of this stinks. I do not think that you should do the "Pick Me" dance. You are -not- in competition with this other man, your wife's actions and reactions are her own choice. After all, you are in the same marriage as her and you're not writing dreamy, romantic crap about another woman that you leave around the house.
True emotional connection and intimacy requires communication. Good communication can be established via Open, Authentic, Trustworthy, and Honest (OATH) communication. This style of being open reveals your vulnerabilities just as it reveals hers. But this is for later to fully implement.
You do need to do things to disrupt her narrative of you as a "monster". You also need to be the kind of man that she will respect.
Re-read this a few times and post again with your thoughts and questions, please.