Don't lie to your friends about why. Don't give details. Just the basic facts. She cheated and she wouldn't end the affair.
By the way, the affair still is going on, it never ended. She had no intention of ending it. I could have told you that from the moment of your first post, but you were not ready to here it. Maybe you still won't believe it, that I could see she is still cheating when I've only read a few posts from you. But your wife is like the poster child of a cheater. Very typical.
Number one sign of cheating is hiding/guarding the phone. Number two sign of cheating is behavior. Cheaters can fix the phone and change their methods but they can't change their behaviors and attitudes easy. Her behavior is practically screaming that she is still cheating.
So when the friends want to ask more details than that (she cheated and won't end it), you can give as much detail as you want, but I strongly recommend that you do not. Just stick with she cheated and she wouldn't stop. Also definitely let them know the guy's name, that he is from her job, and that he is married. But don't do the whole thing about I found this, then she said that, then I found out more, then she said ... blah, blah, blah. Keep it simple, she cheated and wouldn't stop. Period. Tell them you don't want to rehash all the salacious details. They should respect that.
In one post you mentioned that you checked the records and saw there were no more messages since X time. All that means is she is now using a cheater app on her phone that leaves no record. Even an app like Words with Friends have a chat feature and will leave no trace.
This is your life and I can see that you are going to waffle. Betrayed husbands are predictable too. All of this stuff, the cheating and the aftermath, is just a fairly common human behavior, and like any common human behavior, it is predictable.
Talk is cheap. Meaningless. Only actions matter. On her end, and on your end, but especially on her end. She has lied to you every step of the way. So just watch her actions.
If you waffle back to wanting to stay married, ask her to sacrifice to stay in the marriage. Ask her to leave her main job. If financially that is not viable, ask her immediately to go to an employment agency, you can go with her, and she can start looking for another job. Then see what happens. ACTIONS. Companies are hiring, labor market is good enough in almost all areas that she should at least be getting a lot of interviews. But that job has to go, it is tainted with the affair, and anything tainted with the affair has to go. What would she expect?
Also, if you do waffle back and want to give it a shot, immediately take a day off and go down to her job and meet the other man. Walk right up and shake his hand and introduce yourself and size him up. Don't mention the affair. Ask how he is, ask about how is his wife and his kids, use his wife's and kids' names when you ask. Introduce yourself to her boss, the owner, whoever is in charge. Be nice and calm and don't talk about the affair. Keep your head up high. Check the place out. Until she leaves the job, go and visit as often as you can, take your wife to lunch. This is only if she is showing ACTION to reconcile. Chances are that many of her co-workers know about the affair, or at least strongly suspect it. Co-workers have their affairs at lunch hours, before and after work, so the other people working there can see other man and your wife spend a lot of time in the car parking somewhere during lunch. They can see the interaction, the body language, the smiles, touching each other's arms or shoulders when they talk.
You've been a little naive so far. That is understandable because you thought she was trustworthy. Stop trusting at all from her now UNTIL she earns back the trust. She has to do this, you can't help her. You can give her some of those books, that might guide her, but she has to actually DO IT.
If you doubt that she is still in the affair, put a voice-activated recorder in her car. You will find out the sad truth within a day or two, a week tops.
Think about it. You caught her, and she still has lied. She knew very well that cheating could cause her to lose her marriage, and she was willing to risk it. Then when you found out, she knew that lying could risk it even further, and she still risked it. She is risking it all for her other man.
The reason she doesn't want you to tell other man's wife is because then she is afraid other man will end the affair. She does not want to end the affair. She wants the other man, but she's not sure yet that other man will choose her over his wife. Your wife still needs time to "win" him. I'm not 100% on that motivation, but that is my best guess. And in the meantime, she doesn't want the whole reputation problem with family, friends, lifestyle changes, etc., until she's more entrenched with other man. What she would like is to "win" him, for him to leave his wife, then she would leave you, and then she and he would be together and tell everyone that they both just met AFTER they already had left their very, very, very, very unhappy marriages. And in their minds everyone would be so very, very happy that they finally in a true loving relationship. I may be projecting a bit here, but this is one possibility.
The affair is a fantasy, not based on reality like a marriage. Some here call it an "affair bubble." Inside the "bubble," there is no unpleasant chores, no cleaning the bathroom, fixing repairs in the house, worried about finances, dealing with health issues from your parents and siblings. In the "bubble," there is only "I love yous" and sex. Doesn't that sound nice? But it's not real. That "bubble" may be something we all are in when we first start a relationship. But before we commit, we go through some reality. Chores, responsibilities, finances, tough stuff. If we make it through that, then we are considering marriage. But she is committing to other man without any of that reality stuff. Still, though, it's a very nice place to escape from. If you don't mind stabbing your spouse in the back, that is.
Take care of yourself and respect yourself. This is a long process and a roller coaster, that is normal. All of your reaction so far is normal, if not a little naive and trusting to her words.
[This message edited by wk55hn at 5:23 AM, January 16th (Saturday)]