"Sylvie," she continued, "Are you aroused by Subject B?"

"N-no," Sylvie sputtered, even as she felt the wetness drip down her thigh.

Beep beep beep beep beep, the machine chirped.

"Interesting," the lab assistant remarked as she scribbled in her notebook, "I'm going to ask you again, are you aroused by Subject B right now?"

"I'm straight," Sylvie whispered desperately, "I like men. Only men. Please don't do this."

Beep beep beep beep beep

"Hmmm, would you like to stop the experiment? You'll lose the lab credits for both yourself and Subject B if you stop now as the experiment cannot be completed with only one subject," the lab assistant spoke sternly, then her tone changed, "But of course, you're free to leave at any time."

"I..." Sylvie looked at her friend, then back at the red haired woman, "Okay."

"Okay?"

"Don't...don't stop." Sylvie resigned herself to what was clearly soon to come.

"Very good. Now, let's try another test. Subject B, kiss Subject A on the lips."

Aria confidently drew Sylvie's body tight to her own and pressed their lips together, gently. She pulled back to push a strand of Sylvie's hair behind her ear, then kissed her again, this time with a sense of urgency, her tongue parting Sylvie's lips and flicking against Sylvie's own tongue in a way that made Sylvie's knees buckle.

"Excellent," the lab assistant spoke, "Subject A, describe how the kiss made you feel."

Sylvie hesitated, "Like I wished I was kissing a guy," she sassed.

The machine beeped 5 times more.

"Interesting. Let's shift focus for a moment. Subject B," she addressed Aria, "Describe how it makes you feel to look at Subject A's naked body. Please be descriptive."

Aria looked directly into Sylvie's eyes, and something stirred in Sylvie at the intensity of her gaze.

"Looking at her body makes me tremble with lust. I feel as if I want to devour her, kiss her, lick her. My clit throbs with desire and my mouth waters to taste her."

"Very, very good," the lab assistant praised Aria and continued writing in her little notebook, "Let's explore that further. Subject A, how does hearing that make you feel?"

Sylvie flushed red and her voice trembled defiantly, "It...it makes me feel like this can't possibly be a real study. What is going on here??"

Aria's grip around Sylvie's waist tightened, her other arm encircling Sylvie and grabbing her strawberry blonde hair in one fluid motion. She turned her head to the red haired woman and laughed, "She's onto us, Vanessa."

Vanessa tossed her red hair and put down her notebook. "I guess there's no point pretending," She removed her glasses and slowly began unbuttoning her lab coat, revealing her pale, naked body underneath, exposing perky breasts with pink nipples, and the freshly waxed lips of her vulva.

Still gripping Sylvie's hair tightly, Aria extended a hand towards Vanessa.

"Wh-what is this??" Sylvie gulped, "What are you doing to me?"

Vanessa began sensually walking toward the pair and took Aria's hand, reaching up to gently cup Sylvie's face in her hand. "Tell her, Aria."

Leaning in closely, Aria whispered, "I know you're gay. You're not fooling anyone. I lured you here because it's time for you to face the truth. I've tried and tried to help you realize it, but if I have to fuck you into reality," she paused, "So be it."

"I've told you over and over again," Sylvie hissed, "I'm straight. I like DICK. How dare you lie to me and manipulate me like this! You're supposed to be my friend."

The machine again beeped five times.

"Another lie," Vanessa laughed, lifting Sylvie's chin to meet her gaze, "Your friend didn't lie to you about the credits. I'm the TA for this class and according to the official paperwork I filed, this "study" was approved for the promised class credits. So it's up to you whether or not you let this happen and graduate on time, or leave and get stuck here for another semester. The equipment we've used is real, the science is real, the methods are just...creative."

Vanessa dipped her head to Sylvie's ear and whispered, "Stop lying. Stop fighting. You want this. You've always wanted this. Just let it happen."

She moved behind Sylvie and wrapped her arms around her, hands roaming Sylvie's breasts and abdomen, lips kissing Sylvie's neck.

"Aria, show her how a woman eats pussy."

"I thought you'd never ask," Aria grinned, releasing Sylvia's hair and dropping to her knees. Gently, she began rubbing and kissing Sylvie's thighs, her hands moving to grab Sylvie's ass as Aria's lips traveled closer and closer to Sylvie's wet vulva.

Sylvie shut her eyes tight, legs shaking as she felt Aria's tongue part her labia and lick her clit ever so softly. Sylvie couldn't help but let out an audible moan at the sensation, her resistance suddenly faltering and her resolve melting away into lust. Aria's tongue was soft and deft, lapping up the building moisture between Sylvie's thighs as Vanessa kissed and stroked her from behind. As Aria licked, Vanessa moved a hand between Sylvie's labia and slipped two manicured fingers inside her soaking wet slit. Sylvie gasped and arched her back in pleasure.

"Yes baby, you love this, you love having us worship you," Vanessa purred in Sylvie's ear as her fingers slowly penetrated Sylvie's tight pussy. Aria's tongue increased in pressure and speed, every so often pausing to suck on Sylvie's clit, and the combination of sensations caused Sylvie's knees to buckle. She couldn't stay silent, a series of loud moans escaping her lips, "Yes, I want you to touch me, I want this, I've always wanted this, I'm...I'm going to...ahhh!!!"

She could hold back no longer and orgasm took hold of her, building and building in intensity and pleasure until she gasped and squirted into Aria's mouth, Vanessa now pounding Sylvie's pussy with her talented fingers, "Yes, yes, squirt every last drop!"

Another wave of cum and a stream of cum escaped her pussy into Aria's mouth once more, and Aria suckled it down as her tongue rapidly flicked Sylvie's clit, devouring her.

Sylvie shuddered as the last orgasmic pulse escaped her body, and sunk to the floor.

"Fuck," she whimpered, "I guess I'm gay."