I hope you don't mind but I read your other thread. I'm sorry to say that like everyone else on that thread, I think this went further than an EA
. There were many opportunities and unexplained absences, plus this seemed to have been going on for some months.
I think that's why he won't say anything specific, because any detail will catch him out.
For some reason too, I think us posters here didn't realise this all imploded only a few weeks ago, so it's understandable that you're still feeling as you do.
I don't know how you get a liar to 'fess up and tell the truth if he knows you can't prove it. Perhaps threaten to speak to the woman's husband and show him the phone bills? Perhaps say you're going to meet the OW to speak to her?
Maybe that's pointless though, because I really do think he is lying to you and it sounds to me as though you're desperate to think he isn't. I think there's a reason you're picking at the scab though - it's because deep down, you just don't believe him and nothing adds up.
For me, that would be enough I'm afraid. If I didn't believe someone and thought they were trying to have me over, I'd just have to put some space between us and would only be prepared to try again if the whole story made sense.
Sorry if that's not what you wanted to hear, I do feel for you 