"mmm.." Valken flared his nose at Ruhdivar, suspicious. But he had no choice and he didn't have time to argue. "Deal. I won't eat any elvish folk." Valken held out his little thumb in an' attempt for a hand shake to secure his integrity. Demons make deals, Angels swear to god, and humans make promises. 

"By the way, this wont be pleasant. I don't know what those vampiric rats tell you but this is not in anyway erotically stimulating. If they say that they just want to get you naked. " Valken took a few steps back and gave a bit of a worried glance to Nova.
"I'd like to ask you to lay down and put your legs up.." he said, a little embarrassed about how this would look. 
"I need your heart lower than your body mass so that the blood would flow faster to your head and I won't have to be on top of you for as long if you were standing as you are now. This will be awkward in nature and I apologize." Valken was strangely polite about this, even compassionate about the fact that it would be equally as uncomfortable and an invading experience for the both of them.