Not Exactly the Girl Next Door Part Six. Not Exactly the Girl Next Door, #6

I was trying to keep my sanity while having an on-going affair with my high school girlfriend and participating in a swingers' group with my wife. It sounds like fun--and it was!--but as exciting as it was cheating was starting to be a problem. The weird thing was that this was a problem of my own making. My wife (who was a swinger with me) would have approved of me having an affair with Lissa but I had to have a secret.
I had to keep things exciting. It was a bad decision. This is a 10, 000 word erotic novella that contains explicit sex and sexual descriptions. It focuses on explicit sex, sex between unmarried adults, kinky sex, cheating sex, threesomes, group sex, complicated sexual relationships, and other sexually explicit themes and language that not all members of the public will enjoy. All characters are 18 or older.
Excerpt:I don't know how men who had regular affairs managed to do it. It was hell juggling both Gwen and Lissa. Lissa knew about Gwen, of course, but I was married to Gwen so that only made sense. Gwen didn't know I was sleeping with Lissa because I was getting off on the thrill of cheating on her. Marshall had no clue, as far as I knew, that his girlfriend was cheating on him. Everyone was happy and mostly blissfully unaware of what was going on.
That didn't last long.