So my next question is, since this is obviously how he feels about what I did
Actually, it's NOT obvious this is how he feels about your 'flirtation.' It's obvious it's what he's using to manipulate you.
Please don't permit him to invade your safe space on SI. Now that he's aware you're here, you've lost your anonymity. That's okay IF he (a) creates his OWN account in order to convey his thoughts; it's NOT your job to do that for him, and (b) you can come to an agreement (to which he will honestly adhere) regarding reading one another's posts.
Inviting my ex to SI was horrendous, and caused me more pain than I can begin to describe. He was still cheating (and I'd consider that, given the degree of blame shifting your WS has going on, he might be, too), and took my posts back to OW. She'd put bugs in his ear about what I'd posted, and between the two of them, they were alternately highly entertained by, or using my own words to harm me.
You can't unring the bell-but you CAN protect yourself from an unremorseful WS, and that's what you have on your hands. One way you can do this is to upgrade your membership so that you can change your screen name, and then be cautious about the degree of personal info revealed that might give you away.
Sure, sharing your feelings with your partner is ideal---and ultimately, the aim, if you are to reconcile, is to return to that. BUT, this is not the time to share everything with your WS. You are working through things he's not yet willing to own.
Your "flirtation" is a distraction that is preventing him from owning his own actions. And he's perseverating on it so exclusively that it makes me wonder whether there is more to his story than you know. (It's actually pretty rare that BSs learn the full extent of infidelity soon out of the gate; there are some WSs who are immediately remorseful and empathetic and DO provide all that is required--but they are the exception.)
I do NOT mean to give the impression that reconciliation is not possible. It is. But you want to get OUT of infidelity. Your marriage was built on a faulty foundation, so you have to start there--by building a NEW foundation, then a new marriage. It can be done, but it requires TWO partners 100% committed to the process. It's almost impossible for a BS to be fully committed, early in the game; the WS is therefore required to do the heavy lifting for a while. Yours, instead, has you writing HIS complaints for him. That isn't good.
WHEN he finds genuine empathy and remorse (which can be facilitated by IC.)
You've been married a VERY short time. I know, you were together for a long time prior. (I was, too---and I was married for almost 25 years before we separated; please don't make the mistaken assumption that you invariably KNOW this person, just based on time. People can conceal who they really are for long, long periods of time. My ex's mask slipped with another dday---and he decided it wasn't worth putting back on for me (but journals found during a recent move make very clear it WAS a mask, and that for YEARS he had nothing resembling positive feeling for me--despite an Oscar-worthy performance), and made my life hell from that point on---though in retrospect, it was bad all along; I'd simply been foolishly determined to see it another way. I didn't know better.
If you're not in IC, I'd strongly recommend finding one who specializes in trauma. I chose one with a doctorate, expert in how trauma changes brain activity, and skilled in treatment modalities to calm the storm in the brain. Talking is great--and we did plenty of that, too. But far more useful to me were strategies to cope with the trauma in ways that actually altered the way my brain processes. She used things like biofeedback, neurofeedback, and EMDR. They were enormously helpful. The talking we did was enormously empowering. It's WELL worth the effort to find the RIGHT IC, even if it takes a few tries. Therapy doesn't have to be a years-long process, either; in the right hands, you can learn important tools that will serve you well in pretty short order.
Until and unless your husband finds genuine empathy and remorse, both of which he clearly lacks currently, I would stay FAR AWAY from a marriage counselor's office. There is nothing to work with, if he is shifting blame from his double betrayal** to you talking with another man at a party you both attended.
(** As an aside: does your mutual friend know your husband slept with his girlfriend? He needs to. If your husband and he are still friends, he is being lied to, by omission, daily--just as you were. He deserves the information necessary to make informed decisions about his life/friendships/relationship, if he's still with the same woman. Please find the courage to let him know. Even if the friendship has ended, the man may have niggling doubts and concerns, and have been gaslighted as you have been/are being gaslighted. He deserves to know that his perceptions are not those of a "crazy" man, but that he was, indeed, betrayed. JUST LIKE YOU WERE.)
If you're not willing --or, really, ABLE, quite yet---to see your husband's blame shifting as the HUGE HUGE HUGE red flag it really is (to me it suggests there is FAR more to his infidelity story than you know), at least protect yourself. The most important way to do this, IMO, at this stage, is to ensure you do not add a baby to the mix. Be sure to consistently use reliable birth control---birth control that does NOT rely on your husband.
And please--tell your husband that if he wants to communicate with SI, he can create his own account and do so that way. You are not his mouthpiece. He is forcing you to own something that exists in HIS mind. That is not to say he is not hurt---but he needs to address that himself, and to get responses meant for HIM. He has placed you in an untenable position with this latest manipulation.
I won't say, "Dump his ass." I will say that you are in the place, in marriage, that is supposed to be the most charmed. You're supposed to be in the honeymoon period. I didn't get one of those, either. I wish I'd listened to my gut before I was staring down the barrel of my 25th anniversary. While I'm grateful for my kids, I am of the belief that their souls were meant to be with me, and would have been, one way or another. I didn't need an abusive man willing to make me doubt my sanity (ultimately taking it from me, for a time, actually)---I needed a partner who LOVED me.
I don't think your husband knows what that means, actually. That's for him to explore in IC on his own. It's not your problem to solve.
Take care of yourself. If he shows himself to be a worthy partner, THEN you can work on the marriage. He has his work cut out for him. The successful waywards on SI would help him tremendously. But he'll have to speak for himself. (It breaks my heart you felt you had to provide his warped blame shifting perspective for him on YOUR protected forum. One day, hopefully soon, he may be able to see how very selfish it was for him to even ask that of you. That he does not now see that is..well, evidence of who he is, right now. What is HE willing to do to change?)
edited for clarity
[This message edited by solus sto at 1:32 PM, December 29th (Friday)]