Seduced by My Professor

"What are you doing?" I mutter as I feel his hands sliding up my thighs. His fingers had reached the hem of my skirt and was inching it upward, revealing more and more of my pale, white thighs. I didn't know what to do. He was my teacher, and here I was in his office allowing him to. what? What was he hoping to do?"I told you it's time for you to take a more active role in this class, " he explained as his fingers continued to inch ever upward.
He'd pushed my skirt up now to where he could see the crotch of my panties. I'd worn my red ones today, and the soft, sheer material was showing the signs of my arousal. A little wet spot had formed on them.