This is the story about the time my then-girlfriend fucked one of our good friends in a sauna with my permission.
We opened our relationship a year or so before. Our setup is best described as a vixen/stag setup. I loved to let my girlfriend fulfil her fantasies, loved to hear about what she did with others and see pictures when she took some.
We also enjoyed going to a local Finnish sauna where you were naked. We often went with a good friend of ours, both because it was fun, but also because I loved to see his desire when he looked at my naked girlfriend. She also enjoyed his company and got turned on when she noticed his dick getting hard from gazing at her sweaty body.
One day we agreed that I should leave before them, so they got some alone time to see where things headded.
After firing up the wood burner and heating the sauna, we got naked. I could already see how he was eating her body as she slowly undressed. She made sure to face him when she pulled off her bra and bent over when she took off her skimpy g-string showing her shaved pussy.