Hi op, I'm so sorry you're going through this, finding out your husband is not the man you thought he was.
The revelation this this person who you trusted implicitly is an imposter.
The first days and weeks are extremely hard trying to make sense of the information you have and don't have and feeling as though you must make decisions, definitely fight or flight mode is kicking in.
Do you tell people, if you tell others there will be no going back with some relationships, he and you, separately and as a couple will be viewed differently. I do think you know his responses have not been the correct responses, he is blaming you and minimising his actions, you therefor want validation from others to know that you were wronged. It is human nature to want support do not let him stop you from doing this.
His responses tell me what his character is like, he is keeping all options open at the moment, don't believe his tears they are for himself, he is still lying.
It takes a massive shift to stop trusting someone you once trusted totally, he recognises this and is manipulating you and the situation for his survival. His survival is whatever outcome is best for him, he is not thinking of you at this point, your loss, your grief, your betrayal.
Look through his eyes, if you were in his possition how would you deal with all of the condemnation that will come his way if others know and his controlling the situation so as to continue keeping his friendship with her still going. He's a nasty, secretive liar who belives he deserves everything and you are currently turning yourself inside out still trying to hold onto the fact he is a decent man. He is not, every action, every cover up has been premeditated, thought out and concealed for him to get one over on you.
Does he deserve your loyalty at the moment, hell no !
He is self serving and selfish and has taken away your choices whilst he lied and chatted up this woman behind your back.
Contact her husband, he will want to know, do not let your husband dictate if he should be told, you are now in control of your own decisions, stop leaning on your h for any answers.
His answers are all for the benefit of him.
Be strong and assertive in your actions, do not apologise and do not be shamed into thinking any action you take is part of the reasons why he had an affair. It is nothing to do with any of your actions past or present.
He has to own this and take any future consequenses.
for you
Now chin up, you have done absolutely nothing wrong, not one word of blame to yourself, you remained in this marriage honest and truthful, he is the one who has broken the marriage vows, he must take responsibility for the affair and the first starter is talking to her husband and preventing any more secrets and cover ups to flourish between them.