"Do it again sometime?" I asked

"Definitely," She sighed, "Even if we weren't trapped on this train."

We both lay there panting, and I could still feel some of my cum oozing out of my cock where it rubbed up against Crystal.

My sexual fire was dwindling in the wake of the explosive ejaculation, and it was really only hitting me now that I had just experienced the one of the best sexual experiences of my life and I hadn't even cum inside the girl. I attributed the intense desire I had for Crystal's body to her talents as a seductress and also to her enormous, round tits.

Crystal seemed content, and she casually groped at her big tits as she lay on the pile of carpeting, the white streaks of semen slowly becoming runny and clear.

"Crystal," I asked, "You don't think you're any more pregnant than you were a few minutes ago, do you?"

"I wouldn't worry about it," she chuckled, "We definitely pulled out in time. You're clean, right?" Her eyes flickered to my cock, still engorged, but certainly on the way down.

"You won't be contracting anything from me," I assured her, "I'm not usually so reckless with where I put my cock. I ask these questions beforehand."

"Well it seems like we just got pretty lucky," she smiled. I took a long look at her, her hands slowly kneading her enormous tits as she lay on her back. Definitely remembering this moment for later.

We dressed and found our way back to the main hallway of the train, where we kissed briefly and parted ways.