He got me back

When I was 16 nt best friend (17) fucked his drunk girlfriend (17) in front if me. Later at school she came up and said to lay out of school the next day that we were going to party. I layed out and we ended up fucking. We did this once a month for 5 nonths. Always timed for just after her period so I could cum in her. After one time we were laying in bed and she started rubbing my ball sack between her thumb and finger and said " do you like that?" I said o yeah and she said my friend did too. My friend eventually found out about us. They broke up at the ebd of rhe school year however we remained good friends. Fast forward 7 years. I got married when 19. I still hung out with my friend and he came over often. I started a job driving a truck long haul. Usually gone 5 or 6 days. After one trip I got home and my wife and started fooling around. She started rubbing my ball sack between her thumb and finger and asked" do you like that".