My very limited experiences
Wife and I get with a friend off and on, a typical vis8t with him, 3 from him, 2 with me. We stayed over night at his place once. Him 5, 4 me.
Years ago I was seeing an older married gal. We'd go 3 times then according to her she'd have sex with her hubby when she got home. Hubby didn't know about me.
Different girl, we were both 21, she had a long term boyfriend she loved. I was her side peice. They would go on a date, have sex then she'd stop at my place on her way home. I knew about him, he didn't know aboit me. She got off telling me about how they just had sex, how many times, what positions they were in when he let go. The better/longer their sex was the horiner she was when she got to my place. One night she arrived at about midnight, she said something like...I'm so f**king horny, he did me 3 times, let's get in your bed. We always did 2 rounds sometimes 3.