It all started in college, several MMF's, fewer FFM's. After that it was mostly MMF. Frequency varied with who I was dating. With some guys it never happened, with others it was fairly routine, fairly. Wish I'd kept a diary.
A new one and an oldie. https://www.lushstories.com/stories/supernatural/erica-luca-the-legend-2 Is the new one. A super story full of great sex, with a supernatural twist, that will hold your interest (so I'm told).
Then, https://www.lushstories.com/stories/monster-sex/the-emerald-lagoon An Editor's Pick from a comp a couple of years ago.
If you enjoy either, please comment. My ego needs a boost, ha! Thanks.