There was a boy named Marlon who she had sex with most of the time.
He was a horny boy, he had a stable relationship with a girl for a year, we had a lot of trust between us and he told me that his girlfriend did not like rough sex. He used to have sex with me very strong and hard. It was his birthday and he asked me as a gift to have a threesome with another girl. I accepted (I am an open-minded girl) I contacted a friend and we went that week to give her a good gift. We arrived, we drank liquor and we got very horny. I began to kiss my friend and she touched her breasts. He took a piece of furniture and sat in front of us to masturbate, it looked divine. But just at that moment there was a knock on the door of her house, and she was her girlfriend! We all wanted to die. He didn’t come out but he ruined the moment for us. We waited a long time to go out and then each to his house.
Source: reddit.com/r/eroticliterature/comments/s0t681/f4m_24_they_almost_found_us_in_the_trio