Yeah, I want to know what happened

It had been at Jess' birthday party. He'd met Jess in his first week at university and her birthday had been a couple of months later. It was a manic party, fuelled by copious amounts of booze and ****. By the end of the night there were plenty of people passed out. Jess had been one of these, and Ben had carried her up to her bed. After making sure she was ok, he'd headed back downstairs.

Downstairs the party was over. Ben had said goodbye to the last of his friends who remained, and had intended to empty his bladder before joining Jess in bed. The bathroom door was locked. He tried it again. The door didn't budge and there was no response. Ben knew the lock was broken and if you pushed the door in a certain way it opened anyway. Ben pushed the door, and sure enough it sprung open.

A blonde he thought was called Kayleigh stood with her back arched against the wall. On her knees, with her face buried between Kayleigh's legs, was another girl with short brown hair. Both girls turned to stare at him with looks that were half shock and half drunken indifference. Ben recognised the brunette; it was Jessica's younger sister, Rachel. Ben knew he should close the door and leave, yet he remained in the doorway unable to tear his eyes away from the sight in front of him.

Rachel started to say something. Ben thought he heard her say something about Jess, but it was muffled as Kayleigh pushed Rachel's head back down into her pussy. Rachel struggled briefly, but Kayleigh held her head in place with one hand. She stared at Ben with a look that could only be described as slutty, but said nothing.

Kayleigh's eyes lost focus, her head rolled back, and her whole body bucked as she bit her lip to stifle a scream. Ben was acutely aware of his cock pressing hard against his jeans. The sight of these two gorgeous girls pleasuring each was exhilarating. The fact that neither of the girls appeared phased by his presence emboldened Ben. He stepped into the room and pulled the door closed behind him.

Kayleigh released her grip on Rachel's head, and Rachel pulled her head away from the blonde's pussy. Seeing Ben not only still there, but now in the room, she stood up and whispered furiously, "What the fuck are you doing Ben! Your girlfriend is upstairs and you're standing there like a freaking pervert ogling her sister! Get the fuck out!"

Kayleigh flashed a lop-sided drunken grin at Ben as he started to back toward the door. She stepped toward him, putting her hand past him to press the door closed, effectively pinning Ben in. "Don't worry about her, she's just afraid Her big sister'll find out what a crush she has on you", Kayleigh purred.

"That's not true. Ben, I don't know what she's talking about. I want you to go", Rachel pleaded. Ben struggled to find words, but he didn't need to as Kayleigh found them for him.

"That's not what you were telling me before. Aren't you the least curious about what he's hiding down here", with that she gently squeezed Ben's bulge.

Rachel appeared unsure, yet replied, "Oh fuck, I don't know. My sister's upstairs, this isn't right. You should...", she paused mid-sentence as she saw Kayleigh had unbuttoned Ben's jeans, "...go", Rachel meekly concluded. It was too late, Kayleigh already had her hand down Ben's pants and his rock hard cock sprung up as she slid it out.

"My, my, you're a big boy!", Kayleigh teased. Turning toward Rachel, she said with a wink, "But you already knew that, didn't you?"

"What's she talking about Rachel?", Ben asked, finally plucking up the courage to speak.

Rachel looked like a rabbit caught in the headlights, "It was when you came to stay last month. I'd gone out with Mum and Dad, but I came back early. I found you fucking my sister over the kitchen table, and I saw that cock of your's. All I wanted then was for it to be me in place of my sister."

Ben was surprised at this revelation. If it was at all possible it made his cock grow even harder. "I don't know if you'd noticed, but I've been checking you out every time I see you. Jess is crashed out upstairs. This'll be our secret. She never has to know."

"Ok", was the only reply from Rachel.

Kayleigh already had her hand on Ben's cock and stroked it slowly, as Rachel approached. Both girls were on their knees in front of Ben. Kayleigh pointed his cock toward Rachel and ordered her to suck it. Rachel didn't hesitate, licking the tip of his cock delicately. Kayleigh's tongue teased his balls. It felt amazing to Ben having both these girls pleasure him together.

The blonde and the brunette ran their tongues along the length of his cock, meeting at the top in a kiss that Ben found so sexy he felt he was going to cum there and then. Kayleigh kept one hand on Ben's cock as she kissed Rachel passionately, their tongues intertwining and probing each other's mouths.

Ben thought he heard Jess calling his name and put a finger to his lips signalling the girls to be quiet. Rachel froze, looking worried. Kayleigh never took her hand off Ben's dick, rubbing it gently. This time Ben definitely heard Jess. It sounded like she was still upstairs, and she was calling out for him.

Kayleigh's hand felt amazing massaging Ben's cock and he didn't want her to stop, yet Jess was clearly awake upstairs. Ben was caught in two minds. Rachel pleaded with him, "You have to go Ben, Jess is awake and she can't catch us like this."

Shit, he thought, she's right. Ben removed Kayleigh's hand. "You're no fun.", the slutty blonde told him.

"Maybe not, but I have to go."

Rachel interjected as Ben was zipping up his pants, "You best not say anything to Jess. This never happened. You got that?"

"Uh-huh", Ben replied, slipping out the bathroom door as Jess appeared at the top of the stairs. She asked him to get her a drink of water, which Ben did before joining her in bed.

That was how close Ben had come to a threesome. He hadn't spoken to Rachel since then, although he'd seen her once they'd avoided contact.