Every Thursday for the past three years my (40m) wife (36f) goes out to cheat on me and I’ve never told her I know.

My wife and I go to a few gym classes a week together but on Thursdays I work late and she goes to kick boxing classes at a different gym. She did it from the age of 10-25 so she already knows what she’s doing but said she enjoyed it when she was younger and wants to do it again to help her fitness.

She had been going for about a year when one of the guys at work mentions he goes there too and I was just about to say my wife goes there too when he said “my girlfriend did come with me but she was a bit put off as she’s the only woman there and stopped going”. I was a bit taken aback but didn’t say anything and thought I wouldn’t mention it to my wife either.

The next Thursday I rang in at work and at half six I was sat in a food place across the road and watching to see if my wife would turn up for her half 7 class. Just after 7 she pulls in to the car park and I feel stupid for doubting her and think my workmate must’ve just got it wrong about his girlfriend. I was about to leave but thought I’d wait until she goes inside so she doesn’t see me. She gets out the car a couple of minutes later but rather than go in to the gym she starts walking across to where I am and I think she’s seen me and knowing the gig is up I start heading towards the exit to talk to her when she gets in to a car parked no more than 10 metres in front of where I stand kisses the driver on the cheek and quite obviously rests her hand on his thigh as they drive off.

I’m devastated and don’t know what to do. I caught the bus here so she wouldn’t see my car which is parked about a three mile away. I walk back to my car in a daze and then go home. She gets home later and I don’t say anything. I need to know what this is. In my head I’m telling myself she’s escorting as she’s been worrying about having her hours cut. I try and convince myself she’s doing this for us.

I’m wrong. The next week same car. And the weeks after that too. One week there’s even another two guys in the car and they all greet her like they know her. That was the last week I watched her.

This happened two years ago and I’ve never said anything. I don’t know why. I don’t even work late Thursdays anymore but I watch her get ready for “kick boxing”, she’ll kiss me goodbye and then leave the house and then a couple of hours later she comes back and I ask her how it was and she’ll say it was good and then she’ll go for a shower.

I have no idea why I haven’t said anything.