Time to get Rebecca involved

"Katherine..." you ask.

"Yes..." she mumbles.

"I want you to close your eyes."

"Why?" She looks a little panicked.

"I've got a surprise for you."

"ok..." she mutters and closed them.

You wave Rebecca over and she hurries to you from the bushes.

You know it's getting a little crazy but your pretty sure why Rebecca followed you. She had always had the hots for Katherine herself but there was no way that she could take her to the prom. Your pretty sure that Katherine would go for Rebecca but you want to make sure that you have some fun too. That and the way Rebecca was acting earlier you know she is turned on and excited, maybe even jealous of you getting to go with the friend that she wants to be with.

"What's going on?" Katherine is getting suspicious.

"Nothing beautiful, just getting more comfortable." You lie to keep her eyes closed.

Not wasting anytime, Rebecca leans into Katherines inviting cunt. Bec quickly finds Kat's clit and she jumps and squirms at the contact.

"oooh.... about time" Katherine mumbles to herself as she squezzes her breasts together.

Rebecca begins tongue fucking her as Katherine keeps pulling lightly on each of her nipples. Katherine's eyes roll back in her head as Bec slowly slips her middle finger into her soaked pussy.

"oh my god..." Katherine was already looking like she was going to cum. "You are so good... god.."

You only wished you were that good.

Your cock is just aching to get involved. Katherine's blow job got you right to the edge and you really want to cum but when and how do you get involved in a way that doesn't freak Katherine out?