Nieve of me but I've always been the trusting sort ,and for many years untill recently I trusted my 48yo wife izzi , who for best part has kept her girlie looks small not much breasts to talk about ,small bum , short ginger hair 5ft 5 . We have not been having a sex life for a few years now , and to be honest I wasn't that bothered I'm 60 and I thought that izzi wasn't that bothered either. Izzi had started going out bingo with her palls on Wed and pub on Friday or Sat this has been going on for a while and nothin unusual untill one night late instead of letting our pup out the back I decided to take her for a walk along the lane at the back of our house and a quiet carpark by some trees . It was unusual to see a car parked there this late and I thought young couple it was dark I passed the car and could just make out the shape of them getting in about each other . I thought no more about it till I was on my way back along the same ruit, and as I approached the car I noticed a woman getting out and heading off back along the lane so I decided to give her some space and hold back didn't want to cause any embarrassment. Well I waited till she was out of sight and walked slowly home and to my surprise my wife was home and in the shower . She seemed a little flustered I'm usually in bed when she comes home . She asked why I had taken the dog out and where had I walked her and I told her about my walk and I think I'd disturbed a couple fucking in a car . She called me a pervert and quickly switched her light off , no cuddle no kiss . I don't no why but a light went on in my head ,was this my wife that was in the car . I'd read story's about guys finding soiled panties in the laundry basket and it pointed out that there wifes were fucking someone ells, with my heart racing I waited till she was asleep and tiptoe through to the loo on looking in there was no sing of and no sing of undies , I searched all the way to the bottom nothin. I don't no why but for some reason I was disappointed as I returned to bed with a good erection. I lay and thought , maybe she had gone out comando, no not her style , then maybe she had been with someone and had left her knickers . Then it clicked the washing machine . I got back out of bed and went through to the kitchen and put the kettle on, I quietly opened up the washer and there they were one single pair in the machine nothin ells with my heart pounding I took them out why would she not just have put them in the basket . Nothin special just a pair of red cotton briefs , nervous opened them and to my horror they were soaking the whole gusset was a wash with clear slime and a distinct white thick line where her gash would have been , oh my god my wife has been fucking then I thought it was her in the car by the lane it must have been too much of a coincidence. I don't no why but a found myself playing with cock and had the gusset firmly against my lips then my tongue and before too long I was sucking them into my mouth , what the fuck was I doing I was actually licking a strangers cum of my wifes panties. Well before too long I felt myself about to cum and I placed the gusset of her knickers against my cock and came like never before . Oh my god what have I done I thought when I had calmed down . Placing them back in the washer I sheepishly crawl back into bed wondering how to deal with this do I ignore it and enjoy the occasional treat or do I approach her and accuse her of fucking in the lane