21 M4F Sharing the train ride

You're taking a train cross country. Its overnight so you decide to buy a sleeping compartment. Unfortunately they're all out of singles so you'll have to share with a stranger.

The train rumbles across the country side as the evening sun illuminates the compartment. I lay in the lower bunk, shirt off, book in hand. The door shudders open. Its my roommate. I look up from my book. You are standing there, the hallway light shines behind you...

This is the basic premise. Where it goes from here is up to you. Some possibilities are a short but fiery romance, a drinking game gone awry or maybe you wake up to me on top of you. Just pick up from where I left off above. I look forward to your responses :)