Sometimes, certain events can become highly "addictive" to a babe, as it did to my fantastic wife, Kitten, in the 1970s, when we were beginning swingers.
On her birthday in 1973, a buddy of mine whom I had known since age 10 (and of whom my wife was very fond, and had fucked numerous times for "variety"), decided to surprise her with a wonderful dinner out, then give her a most unique "gift": Her very first-ever 3some.
Her standing joke response to the question, "Would you like a threesome?" was always, "Definitely! Call 2 more guys!"
This time it would be two men she loved, both fucking her, simultaneously. And, because her birthday was on a Friday (and she didn't work on weekends) her first one would last around 3 days. She was thrilled when she found out what we wanted to do to (and FOR her). She always called the ones she had, "an 'Express Train' to Orgasm City!"
She once had, at a Swing Party, a 3some with 2 new guys that was so intense, she lost count of the number of orgasms she had, and her thighs took THREE HOURS to stop twitching (muscle spasms) from holding her legs up and back for so long.
The next day (at our host's residence) she astounded everyone by sleeping for FIFTEEN non-stop hours; so exhausted was she.
So, that's how she became obsessed with them, to the point where she never wanted to say "No" to one, if she knew (and liked) the men making the offer.
In 1979, we relocated from Denver to Houston and made plenty of new swinging friends. One man in particular, was Danny, and he was nothing less than phenomenal in bed, to the point that many girls told their girlfriends, "I would love to fuck him into a coma!"
He had a nice, 10-inch dick that frightened some babes at first, but other gals reassured them with, "He's gentle and knows EXACTLY how to use it!"