Sienna's POV

I straddle him and sink onto his cock and the look on his face when I take control is the most satisfying thing I've earned all semester.

Better than any grade. Better than the orgasm on his desk.

The man who just edged me until I cried  is gripping the armrests of his chair while I roll my hips on his cock. He's still hard—still thick and pulsing inside me—and my oversensitive walls clench at the stretch.

"You thought we were done?" I murmur, leaning forward so my lips brush his ear. "I've waited fourteen weeks for this. We're not done until I say we're done."

"Hands on...