My wife Lyn lost her virginity at 18 1/2 in a college dorm, to a young college guy who screwed her so energetically that they fell off the bed, sandwiched between the bed and the wall, and he continued to fuck her in spite of the uncomfortable aspect of their situation until he shot his cum in her.
She had started taking the pill a few months before to prepare herself. She knew what she wanted. She had already stuck fingers, a banana, and her liberated mom's vibrator up her pussy so she didn't have a hymen to break. She was a horny girl and wanted her first fuck to be a good one, and it was. The college guy fucked her a second time, and she was riding his dick when his room-mate walked in on them. That didn't stop the action though, and their voyeuristic interloper only left when her beau threw something at him, but not before he got a good eye-full of Lyn riding his pogo stick.
Later after she'd lost her virginity, Lyn got a boyfriend in her last year of high school, who had a long skinny dick, his fire-hose she called it, and they would fuck each other's brains out in her bedroom, while her parents thought they were studying. A couple of times she noticed her adopted brother, who was the same age as her, watching them fuck through the window after he had climbed the big pine tree outside their house, and made sure he got a good look without letting on to her boyfriend.
Once she even noticed that her brother had brought a friend along, and she put on a good show for them both; prancing around her room completely starkers while the two of them jerked off in the tree.
She never went any farther with her adopted brother. He got a girlfriend that he would screw in his bedroom, which was next to Lyn's, whenever they got off school early, and if Lyn was home, she got an earful of her brother's girlfriend moaning and wailing as he fucked her silly with his big prick.