Offer to ruin Gwen's reputation.

"I could help you with that." You tell her. She looks interested.

"You could? How?"

"Well if I ruin Gwen's reputation, Peter will come running to you."

"You're right!" She exclaims, "That's bound to work." She gives you a big hug, then you walk off in search of finding Gwen.

You find the cute blonde by her locker wearing a tight green sweater and a purple skirt. "Gwen Stacy?" You ask.

"Yeah?" She looks up from her books.

"Come with me." You order. You lead her into an empty Men's bathroom.

"I don't think I'm supposed to be in here." She points out.

"Take off your clothes." She drops her books on the floor and then lifts her sweater over her head and drops it by her books. She then unzips and drops her skirt. She stands in the bathroom in her cute white bra and panties. "And the underwear" You add.

"What's this about?" She asks as she undoes her bra and shows you her perky teenage tits.

"Shut up and do as your told." She shuts her mouth and slides off her panties. "Good, now kneel on the floor." She does as she's told, kneeling on the dirty bathroom floor by the urinals. You pick up her books and clothes. "Now, anyone that comes in the door, you offer a blowjob, and let them cum on any part of your body they want." She nods. You walk out the bathroom and rip a sheet from her notebook. You make a sign that says "FREE BLOWJOBS FROM GWEN STACY" and stick it to the door.