Did she do it or no???

My wife of 21 yrs,age 45.
She calls another colleague for help in her work to her office sometimes.
She knows about my cuckold fantasies and tells me stories while having sex about her old interests( nothing happened with them and I don't know them).
Few months back I noticed she is paying special attention to this gentleman ( like getting him coldrinks he likes).Few months back I met him outside her office and we had casual talk.
When I went to see her and told her that I just met him she said" you met him?" I said yes ,she asked me what did you talk? I said just casual chat.( It was surprising for me as she doesn't react that way when I meet other colleagues).
Few days back when I was ***** she said" he came 3 times" I asked who? She took his name.I asked where? She said hotel and named one hotel but refused to tell me date and time.I checked her Google maps history and it showed her location was at that hotel.But she refused that she went there.
I asked her details and she told me details like positions they did it,how they were ******** after each session,orange juice they had,his cock size,that he had small hair on his balls,how she sucked him.
Also things like" He booked room,I was first one to arrive,clothes she was wearing,he was wearing,I was first one to leave,position on bed,no questions asked while I checked in etc.
When I was upset,she changed her narrative to "nothing happened,I am good at telling stories,I never fooled around with you".
It excites me very much but she is confusing me.
Kindly tell me your opinion.
I am damn confused.
Thanks
Salil