This is a true story. I changed the names of all and some details to further disguise the identities of those in this story. The dialogues are to the best of my memory. It has been more than 40 years since this happened so I hope you will cut me some slack.
To recap: Darla, the wife (46 years old) of my supervisor Will (early 50s) had started an affair just two weeks after we had met. We have had several sessions together, including a weekend when Will was away and some sneaky sex at the Memorial Day cookout. I was 24 years old at the time of our affair.
Go to the —— lines for the sexy parts.
Will invited me and several other single people in our office to a cookout on Independence Day and then to go see the fireworks that same evening. I knew he was going to ask me. Darla had told me the previous weekend, while we were in bed together, that he was going to invite me. I was looking forward to being with Darla at their house. I wanted to pursue some mischief with her.