You can keep the pictures down if you want...but I would put them back up...if you plan to Stand. Dome do, some do not.
I'm sorry this happened...ut it has happened in some form to all of us here. After a good experience together expect a retreat. Expect there to be an OW.
It looks like he may have lied and she didn't know...cool. If that was a relationship of any sort it may bust because of that. But there will be antoher OW...THERE WILL BE AN OW.
Infidelity is the greatest difficulty the LBS has during this MLC. The problems are much deeper and an OW is merely a symptom...but infidelity is pain.
He is not a jerk. Good chance you will have a Drop-In...but too early to tell.
Next time this sort of thing happens, do not confront. It only makes you a Bitch to him...though you are not. It will make him fear you, your anger, what you will do now to him and an OW and what you will do in the future--ie he will fear your anger will be too great for a return....too much damage.
When Sweetheart left I left the pictures on the walls...I may have added to my 'shrine' as the OW referred to it rather than removed.
For me it was a sign of my commitment...and Sweetheart could see it every time he came over...and he snuck over all the time while I was at work in the daytimes.
He wants reassurance and cuddling from you...the morning was evidence. But this in NO WAY means he is progressing so quickly as to be on his way to returning. It hasn't gotten worse yet...and trust me it will.
If you choose to Stand, you must be strong. You must accept that he will have an OW, feel in-love with her, act happy, hate you etc.
You must accept this crisis to get through it...it will happen whether you want it to or not, whether you make all the right moves or mess up royally. You cannot stop it. I know you want to. But if you are able to yank him out now, he will return later for worse MLC.
It's going to be okay and it is in no way over...unless you decide that. I'm a bit sicker today than the other days--can hardly talk. So I will be resting. But I will try and pop in to check on you.