Tell her the truth

"Angie, I'm sort of in the middle of a situation here," you say, gesturing down under the desk with your off-hand, before miming a cock sliding in and out of your mouth.

Angie laughs, her laugher filling the air for a moment and drawing a glare from the Librarian, an archaic looking spinster who you assumed up until now was a partially mummified corpse. Angie smiles apologetically in her direction, before winking at you.

Meanwhile, under the table Caoimhe's mouth continues to rub along your member, her warm hand wrapping around your balls as she gives them a gentle tug, getting your cock nice and ready to start spraying in her mouth. Caoimhe gags loudly under the table as she takes your whole length in her mouth again, tickling your balls gently as she does it.

"Alright, Romeo, tell Juliet there to slow down," Angie grins. "I'll see you about. You should hang with us soon, Sarah said she really misses having you over."

You nod, a response forming in your head but your mouth is unable to speak them, simply letting a groan out of your mouth.

"Good response," Angie laughs, before turning around and heading out the door.

Caoimhe's continues sucking, squeezing and tugging your balls and getting you closer and closer to orgasm. You let out one final moan, knocking your head back as your cock fires. Caoimhe sucks down spurt after spurt of cum, letting it splash along the inside of her mouth, her cheeks, her tongue, her teeth and her throat, coating it all with your pearly cum as she gets a great big taste of it.

After a moment, making sure the last of your cum is gulped down, before Caoimhe pulls away. She tucks your cock back into your pants, zipping it up and threading your belt again. You lean back, allowing her to pop out from under the desk and back to sitting next to you.

"Oh, that was good," you grin.

"Good job lying to that girl. What'd you tell her?"

"You heard her? So why'd you keep going?!"

Caoimhe giggles, smiling coyly.

"I found it really hot. I mean, your cock's amazing and your cum tastes great, the thrill of getting caught is hot, and one of my biggest fantasies is doing it in a library."

"I'll take that into account in future."

Caoimhe licks her lips, before giving you a quick peck on the lips.

"Good job with all that studying. Glad you liked your reward. Shall we hit the books again?"

"Do we have to?"

The look on her face tells you that it's a definite yes.

"If you do a good job, there's more rewards. Now, let's study!"