How will you deal with Imogen's crush?

Exploit it

"Come here," you beckon the lovely brunette with your index finger and she daintily dashes over to you, falling to her knees at your feet, eager to abase herself in your service. You put your heel on her shoulder and push her face to the floor, before crossing your legs on her back, using her as a footstool.

"Imogen," you say slowly, weighing every word, "the grad-student rota fulfils my needs most satisfyingly, but I could make more use of you, if that's what you'd like."

"Oh, yes, Professor, nothing would make me happier!"

"I could call upon you at any time of the day or night and have you do, well, whatever I might want…and in return, if you perform superbly, I could allow you to pleasure me sexually, even when it's not your turn to serve…if that's really what you want."

Imogen lets out a little moan that sounds almost orgasmic, stumbling over her words in her eagerness to agree.

"You do understand, though, that the things I ask of you may be extremely unpleasant or demeaning, beyond what's expected from a grad-student." You make it sound like a statement, not a question. "Obviously, I would punish you severely if you fell short of the standards or enthusiasm I expect. Also, you would have to achieve all this without it affecting your work: studies come first."

"Yes, Professor, of course, I won't let you down."

You smile contentedly, having effectively procured your first **** girl and spend the last few minutes of the meeting relaxing with your feet up on the rump of a gorgeous twenty-something.