"No, not at all"

I reply, and continue: "As a matter of fact, the view has been greatly improved now."

Millie smiles a mysterious smile, and goes back to focusing on the assignment we are working on. It is now a bit past 11pm, and the group of three students who are the last ones on the floor except Millie and myself are in the process of leaving, so we have the floor to ourselves.

We keep working on the assignment, and the clock keeps ticking away, it is soon going to be midnight. I really want to make a move, and if Millie was a girl my own age I would definitely have done so, but my guess is that she is about twice my age, so I don't know how she will react if I try something too obvious. But then, she did watch the porn clip with me two nights ago, so maybe she is interested in hooking up with me?

I look over at Millie, she is focused on the assignment, and her big tits look so nice under her sweater without the bra. Then I think to myself, she did take of her bra to give me a better view of her big tits, she must be wanting me to make a move.

"Got it!" Millie suddenly exclaims, and starts erasing a bunch of our work, and interupts my wandering thoughts. Her tits sway back and forth slightly from the erasing action, and it is very nice to watch. Millie writes a bunch of new figures over where she previously erased our previous work, then triumphantly talks me through the solution to the assignment.

I smile at her, tell her that I am quite impressed with how she figured it out. My hand wanders over to her thigh as we talk, but she does not seem to mind. Millie's eyes sweep the room around us. I can tell what she is thinking, so I say:

"Looks like we got the whole floor to ourselves."

Millie is still in a bubbly mood, so replies:

"Yes, sort of makes me think we should do something naughty."

My mind races, here is my chance to make a move, but what move?