Politely refuse

You rub your neck thoughtfully. "Er, Trish, I'm glad to see you and all, but all of us guys just got finished with a major tongue-lashing session headed by Miss Stoller. I don't think I can invite you in right now. Maybe when I get a better idea of what we can get away with."

Trish looks a little downcast. "Well, I suppose we can just go to the common room and talk, but I would like to have had some more privacy. See, there was something I wanted to ask you about..."

"Hey, Trish," says a voice from behind you. "Making your move on the new boys already?"

You turn to see a girl standing there behind you, about five-six, with an athletic body and long blonde hair. She's obviously striking a bit of a pose, and sticking her already ample chest out a bit to make the most memorable impression she can. She's staring straight at you with predatory eyes. If there were a word for "attractive and popular bitch" her picture would be right next to it in the dictionary.

"He's a friend of mine," Trish says with a bit of steel in her voice.

"How nice," says the blonde. "Aren't you going to introduce us, then?"

Trish frowns. "John, this is Phoebe. Phoebe, John. We were just about to go somewhere."

"Oh, I'm sure you have a moment for me to ask John to be my date for the dance this Friday," Phoebe says, batting her eyelashes at you. "You knew about it, didn't you? It's a tradition, we get together with the boy's academy across the river and dance six feet apart under the watchful eyes of prudish spinster chaperones."

"Well, I..." you begin, but Phoebe cuts you off.

"Of course, that's just the preliminaries. The real party happens after the teachers go to sleep." She steps close enough to whisper in your ear. "Come with me to the dance, and I guarantee you'll come with me afterward, if you know what I mean."

"If you're finished being a shameless slut, John and I have things to do," Trish says.

Phoebe sneers briefly at Trish's comment, winks at you and strides away with a swing in her hips.

"Can you believe the nerve of some people?" Trish asks. "Come on, let's go catch up a bit on old times. And I'll tell you more about this dance."

Well, of course it would be nice to chat with Trish. But there is the fact that you felt Phoebe slip a piece of paper into your pocket, and you're rather curious as to what it might say. Besides, you really do have a lot of moving in left to do, and there's supposed to be an inspection in about an hour that you should just barely be ready for if you work your butt off.