Never caught my wife in action, but I caught her text messages. When she left her phone at home unattended, I wanted to check her messages (I normally dont do that, but something made me do it) then I found her texts with a foreigner man on whatsapp archives. Non-nude photo exchanges, normal conversation in the beginning. But the more I scroll down, the dirtier it got. She travels a lot due to her job and she met this guy from one of her trips to europe. As far as I understood from the messages, they fucked several times and she did things she never did to me. I even saw this text (not the same words but similar like below:
He: Good morning!
Wife: Morning
He: I'm in bed and my dick is up, come suck it like you did last week
Wife: Mmm want me to eat your ass again?
He: That was the best part!
She never ate my ass - i am not fan of it but she never asked or did - she never talked dirty to me.
This was just one example, and I caught her cheated on me twice with 2 different men on 2 different trips abroad.
She still doesnt know that I know these, and my fantasy about sharing her.