Mark has a secret hook-up.

You spend the day gaming before heading to bed around 1am. Mark still isn't back. You lie back in your bed, browsing Instagram on your phone in the dark. You hear shuffling, some giggling, and fumbling at the door. You quickly turn off your phone and pretend to be asleep, cracking your eye open just enough to watch the door.

The door opens - it's Mark, with some cute random white girl. She's blonde, slender, but you can't make her out too well. They're whispering to each other. There's an empty common space in the room, with one bed on either side, the door and closets at the front, and the two desks side by side in the back. In the pale darkness, you see the girl moving to stand next to his bed. You shift to "sleep" on your side to get a better look, since she's only a few feet away now.

It's....Emily! From math class. The friendly, cute blonde with a beautiful chest. She's wearing jeans and a tank top, as usual. You see her cute bubble butt as she faces your roommate's bed. "Take it off," you hear. You catch sight of Mark as he moves on his bed, taking a seat in front of her, feet planted on the carpet. Was she....about to blow him? Right there? You feel your cock twitching. This was pretty hot.