Celia moaned softly and squirmed her hips a little at the teasing touches, and the slight intrusion in her body. Neither she nor her twin changed their own movements, even after Susan swapped which twin she was working on. With both twins having their hair out the best Susan could do to keep it 'balanced' was to keep track of which body she had done something to. Assuming she could remember that much of course.

The two twins let their fingers slide forward, pushing against the other student's lips gently as each twin tried to coax their finger inside Susan, wanting to return some of the pleasure they were feeling from Susan.

Susan let out a moan of pleasure as the twins' fingers found their way between her nether lips. "Aah... You've had a... ah... a lot of practice... mmm... on the curves, I see... oh." She shifted her attention to Celia's other breast, her kisses and licks frequently interrupted by moans and gasps into the soft flesh.

As the twins' exploration of her sex grew more intense, she slid her hand down Celia's body to caress her lower lips in a manner similar to how she was treating Aya's. As her fingers slipped between inside them, she pressed forwards, her breasts pressing against the twins', her nipples brushing against theirs.

Both twins moaned as the let their hips rock back and forth, grinding on the invasive fingers that felt so very good. Only ... mhmmm done ittttt ... once ... aha ... before. The two managed to groan and moan out, the pleasure as amazing as it had been the first time. Their own fingers writhed and squirmed inside Susan as Aya started to slide the finger she had inside the Chinese student back and forth inside her, Celia choosing to search along those slick tight walls and try to find Susan's g-spot. They pressed close to Susan, playfully rubbing their nipples against and around Susan's own hardened peaks with a few moans and shivers of pleasure.

Any reply Susan may have had to learning that the twins had only been with one other girl before this was lost to moans of pleasure as their fingers explored her sex. Celia's search soon bore fruit, and Susan let out a loud gasp as the girl's finger found the sensitive spot they sought.

She used her fingers to seek the twins' g-spots, expecting that she'd find both at the same time. She also shifted slightly, allowing her nipples to rub against theirs, and again exchanged kisses with each twin, switching from one to the other after a few seconds.

The twins were eager to learn more, throwing themselves into the pleasure and letting it wash completely over them. Susan's fingers inside them felt amazing, and neither wanted it to stop. The two's breathing was coming faster and faster, blood racing through their bodies as they 'shared' Susan's sex between them. And that was BEFORE Susan managed to find their g-spots, at almost the exact same time. They both moaned loudly in bliss, before pressing their lips to Susan, one kissing her lips as the other simply kissed her face and waited for her own turn with those smooth lips.

Their fingers slipped back and forth, the two working for the same goal, but with different tempos and movements. Celia's movements were slow and gentle, or at least as slow and gentle as she could manage in her current state of mind as her finger teased and stroked Susan's G-spot. Meanwhile Aya slid her finger back and forth, using it to finger fuck Susan, relying more on speed than trying to learn techniques.

The combination of different techniques served to drive Susan further into ecstasy. Her kisses became firmer and even more erotic, her tongue slipping between the lips of the twin she was kissing to do a brief erotic dance with that twin's tongue before she shifted to do the same with the other twin. She also slid a second finger inside each twin, doing her best to match the combined effects of the twins' fingers inside her. It was far from a perfect match, since she could only use one hand on each of them, but she tried to compensate by concentrating on their g-spots. They were quickly pushing her towards a climax, and she didn't want to leave them waiting too long for their own.