Ask them leave her alone
From Create Your Own Story
"Hey, guys," you say, politely. "What do we have here?"
One of the horndogs looks up at you. "What's it to you, man?"
"She obviously ins't that kind of girl," you point out, your annoyance level rising.
"So?" demands one of the guys, his eyes narrowing.
"Okay," you start, exasperated. "Look." You motion for the guys to come closer to you, out of earshot of Shelby. "There's plenty of pussy at this party. I mean, look--right there--" You point to a group of four seductively dancing hotties.
The guys nod, getting it. "Ah, I see," says one of them. "C'mon, guys." They finally leave.
You: