About all you can manage to do right now is pass out and get some sleep.

Your heart is racing from everything that happened with Cyn and then the shock of your sister just barging in on you, but the adrenaline wears off quickly. You are snuggled comfortably between two warm, feminine bodies. You crash hard and are soon ****.

You are woken up by the sensation of a body rocking against yours. It takes you a moment to remember where you are. You’re still sandwiched between two soft bodies. A warm thigh is draped over your crotch, rubbing against your stiff cock through your jeans. There’s a gentle, rhythmic grinding against your hip. Your eyes blink open and you see it’s still dark out, and just a bit of light creeping in the windshield from the streetlight at the end of the alley.

You panic when you realize that the grinding is coming from the side where Abbie was laying. You can hear breathing heavily as she humps against you. Your head turns towards her, and you can see she’s not asleep, having a dream. Her eyes are open, fixed on your face.

When she sees you look back at her, Abbie freezes. Her breathing catches in a gasp.

“Fuck. How wasted are you? It’s your brother.” Cyn’s voice comes in a shocked whisper from your other side.

Abbie’s eyes go wide as she realizes she’s been caught grinding her crotch on her own brother. She rolls off the mattress and scrambles to open the side door of the van. You’re too stunned to say or do anything, as your sister tumbles out of the van. She starts to stumble away down the alley.

“What the fuck was that?” Cyn asks in a hushed voice. It sounds more like she’s talking to herself than to you.

“I’ve got to make sure she’s ok.” You tell Cyn as you crawl out of the van. You rush after Abbie, who’s walking as fast as she can on unsteady legs, tugging her short skirt down into place.

When you catch up with her, you put your hand on her shoulder and turn her to face you. You can see her eyes are filled with tears.