My first wife and I had been married for 6 or 7 years when I began to suspect she was fooling around with a guy at her work. It was my own damn fault as I was working long hours 6 days a week and playing golf all day Sunday so really hadn't been giving her the attention she deserved. My suspicions we confirmed one night when I arrived home late and for some reason unusually horny, and started to fondle her while she slept. Normally she awakens pretty quickly and happily joins in, but this night she slept very soundly even as I spread her legs and started to go down on her. She was wetter than I had ever seen her and smelled of sex, so I was pretty sure she had been fucked recently and when my tongue probed inside her cunt I tasted the evidence.

Surprisingly I was not mad or disappointed but rather very aroused and licked her deeper and longer than I ever had before. She awakened and started to squirm away from my mouth, I'm sure because she didn't want me to catch her with a cunt load of someone else's cum but I pushed hard against her lips and kept eating hungrily. Once I had licked it clean I worked my way up to her tits and then gave her a big sloppy wet kiss as my cock slid easily into her well stretched cunt. I came so fast she had to fake her orgasm but I just pretended to believe it was real and we went to sleep.

She clearly thought I hadn't been able to tell she had fucked this other guy, and since I had actually enjoyed his sloppy seconds so much I went out of my way to set up situations where she could easily squeeze in a fuck with him before I was home. The first couple of times she was hesitant to let me lick her but soon gave in to the temptation, and after that she figured it was safe and just let me have my way with her. This went on for several months until she finally realized that she wanted to fuck him a whole lot more than me, and we broke up and were divorced.