This post really hit home for me because your WH reminds me a lot of my ex. He was Mr. Social Butterfly and friends with everyone. His first affair (that I know about) was with one of his co-workers. He also refused to look for another job and had a million and one excuses as to why he had to stay.
You don't need to be psychic or rely on "intuition." All you need is common sense.
1. If they're still working together, then, at the very least, they're still communicating. They don't need to call or text each other if they're seeing each other every day. They could also be sneaking off together during breaks and you wouldn't know it. Your husband blocking her on his phone and telling her that things are over is meaningless when you know and she knows that it wasn't his choice.
2. If they were seeing each other every day and sending each other sexy photos and message, then they almost certainly had sex or fooled around in some manner. That is what adults do.
3. Your husband is only going to admit to the bare minimum of what you can prove. He's shown this repeatedly. If he thinks he can lie to get out of it, he will. He's never copped to anything that you hadn't already discovered beforehand.
4. If he's whining about how you won't let him to go to "work socials" then he really doesn't understand the impact of his betrayal or really care about how much devastation he's caused you. He thinks this is just a minor argument that will blow over eventually.
Let me tell you from experience that your feelings of anxiety and sadness will never go away, so long as he working under the same roof as the OW. And all those other nice, "lovely" co-workers that he's friends with at his job know that he's having an affair and are complicit in it.
In my opinion, he not only needs a different job, but he needs better boundaries with everyone in his life. I don't know what line of work he's in (my ex was the host at a restaurant/wine bar), but if chatting over apps like teenagers is the norm, then maybe he needs an entirely new profession altogether.
That brings me to my next point, which is you shouldn't have to worry about what this man-child is doing behind your back when you have an actual teenage daughter to worry about. Instead of being mentally and emotionally present for her, he's been wasting time and energy chatting with his friends, going to "work socials," and carrying on an affair. His actions have created instability in your home during a challenging time when she needs safety and stability more than ever.
Your husband thinks that all he has to do is sweet talk and romance you, and then hope you just get over it. If you allow that, then you're setting yourself up for more betrayals and more misery.
Personally-- and again, I'm speaking as someone who went through exactly what you went through-- my advice to you is that him finding new job and cutting contact with everyone at his current work place should be a condition of you even considering reconciliation.
If he balks at that and accuses you of being unreasonable and controlling, then you know that your marriage and your family isn't a priority to him. And as much as you might fear divorce and how it might impact your daughter, perhaps you need to consider the fact that you've probably been a single mother for a while now-- you just didn't know it.
[This message edited by BluerThanBlue at 3:29 PM, Wednesday, December 10th]