Please read Part I before continuing to read Part II (things make a lot more sense ;)
I placed my legs on either side of his and lifted my body up enough to slide down his jeans and boxers, exposing his hard stiff cock. I allowed his pants to fall around his ankles before stepping back and toying with the clasp of my own jeans, taking my time (even in the cool night air) to tease him. As I swayed my hips slightly, I slowly unzipped my pants and then leisurely slid them down my long smooth legs. His eyes followed them, devouring each newly exposed inch of my flesh. As the denim settled on the cold cement floor of the observatory his eyes returned to mine and I moved back to where he sat, spinning the rolling chair to face the desk. I sat on the desk edge opposite him, my legs spread wide, clothed in only a white cotton thong, translucent with my juices from cumming before.
He rolled the chair under the desk and caressed my breasts and arms with his strong hands from where he sat. I bent into him and kissed him deeply as he wrapped his arms around me and stood up, letting the chair slide away. His thick cock was now pressed against my wet fabric covered hollow and I wrapped my legs around his waist hungrily, pulling him closer. His hands stroked my back as he kissed me deeply and I gyrated against his cock while reaching around to cup his balls. My clit, still erect from my orgasm, drove me towards him as I ground against him. "Please" I moaned, as he sucked on my neck and caressed my breasts.
He chuckled slightly. He was so hard and precum was freely running down his cock, but I knew he was enjoying being in control and my lust for him. He gathered my hands from his balls and placed one on the desk on either side of my body, his hands holding them securely in place, our fingers lacing. As he did so, he pulled back and slowly teased the head of his cock beneath the thin crotch of my thong and to my sopping wet entrance. With one thrust he shoved his incredible length deep into my tight pussy and kissed me furiously. The force pressed me back into the cold screen of the large monitor behind me, but the incredible heat radiating from his body was more than enough. He began pummeling me with his cock, hard and deep, never pulling all the way out as the thin material of my thong rubbed against my clit and his cock.
"Professor. YES. YES" I moaned and screamed, my body convulsing as he fucked me, driving me towards my second orgasm. My hips met each of his thrusts as my juices puddled on the desk beneath me and my pussy began to tighten around his throbbing cock. I could feel the head of his cock begin to swell in me and I knew he was trying to make my orgasm last as he slowed and alternated his strokes.
"Please, just cum inside me. PLEASE" I begged, continuing to meet each of his thrusts, my legs tightening around his waist as my body braced for my orgasm and I tried to drive him deeper and deeper. His dark eyes focused on mine as he began again to thrust furiously in and out of me, the veins in his arms standing out as his hands pressed into mine. Finally I couldn't hold out any longer and my pussy convulsed and tightened spilling my juices down his cock and balls, "God yes. FUCK. FUCK" I cried as I came and he thrust into me one last time, bottoming out before reaching his own release.
"Katie. God. That feels good. Fuck. YES." He moaned, as his thick cum spurted into the depths of my pussy. As he came he dropped his head to my shoulder, grasping my hands even more tightly.
Finally, after a few moments, the fog cleared for both of us and he wrapped his arms around me, holding me close for a moment.
"That was..." He began to say slowly.
"Don't." I interrupted him, pulling away and beginning to collect my clothing. "We said just tonight. I don't want you to lose your job."
"You said just tonight" He reminded me, turning to follow my progress. I simply raised my eyebrows at him and continued to dress. He didn't say anything further, he simply watched me pull my clothes on as he stood there with his pants around his ankles. As I pulled my still damp shirt on, he bent and pulled up his pants.
I approached him as he buttoned them, and I kissed him on the cheek, allowing my hand to caress his chest as I pulled away. I smiled at him and whispered, "Have a great night" before turning and heading for the door.
"Thanks" He called after me, but I didn't bother looking back. It was perfect just the way it was.