"Have sex?" He can't think of what else Professor Rammsteiner could be trying to get at. He wonders why Professor Rammsteiner is skirting around the topic, though; after what they had done...

No. There's no need to wonder. He knows why, and it makes him annoyed all over again.

"Yes." The word comes out sharper than usual. "It was part of our bargain."

As far as he's concerned, he's getting the better end of the bargain. Jade smiles, humourless. "I hope that doesn't bother you."