How many men has your wife fucked?

Do you like not knowing who is fucking your girl? My wife has had sex with men I have never met during our marriage and it turns me on. I could be standing in line next to a guy who has had sex with my wife and I would not know it.
Yeah the suspense can be turn on
Additionally the risk of she getting pregnant from someone other than me can be super turn on. She’s been lucky for past 3 months or so, unless she’s on birth control or something and I don’t know of it