I posted a few thoughts on this but my wife just brought up one of her "omg what a slut I am moments or really days"
Early on in our relationship we lived together and were regularly having MFMs with friends of ours.
She worked retail at the time and often has days off mid week. Now our "rule" at the time was we only played together with our friends (she did her boss at work alone if course). Our friends were told not to show up expecting things when I was not home. Found out years later she abd they did not always abide by the rules. And yeah I was fine when I found out.
So anyways on weekday she has off. I was working a ton of hours so it had been a week since we had sex. Well she was feeling extra horny in the morning and as soon as I left she called two friends to see if they could come over for an hour or so.
By 9:30 am she had them both on the floor in our living room. This was not an all day thing. So they each only came once while making her cum a lot. By 11 they were gone. She had a quick shower. Got dressed, feeling relieved but still a little horny for me to get home.
Well around 12:30 doorbell rings. Friend of ours who has fucked her before and one of his coworkers are dropping off some games he had borrowed. They had bought some subs , do she invited them to have lunch in our apartment instead of their work truck. She is not sure why, but she told the friend she thought at first he had showed up for a nooner. Coworker almost choked on his sandwich. Well one thing led to another. Coworker who she has just met, ended up coming in her pussy while friend came in her mouth while she just came.
Well fast forward to that evening, we went to the local triple A baseball game with another friend. Lots of flirting, she was touchy with us both, back to our place, you can guess what happened next. Yep and nice MFM in our bed.
Afterwards and for a few days she would get this little smile on her face and I always wondered why.