Kat and Jess were already peacefully asleep. I made a final walk through the house and locked up. For the first time in hours, I picked up my phone. It had been liberating to be separated from it for so long. I was surprised to see a half-dozen text messages from Nicole. She effusively thanked me for such an unexpected and fun weekend. It was the last message that was the real hook, though. It had been sent only ten minutes before.

"A bunch of your cum literally just now slid out of my pussy," she wrote. "That's how deep it got inside me." It was twelve hours since our...