[ First Klaus looks apprehensive about taking his hand, then he laces their fingers together and takes it upon himself to make the gesture way more familiar than necessary. It's puzzling. Thus far, that basically sums up the impression Klaus is leaving on him: puzzling.

But he makes no moves to pull away, seeing as what they'd just agreed to do would put him in a much more vulnerable position than simply holding hands. ]

... Fill out the whole thing? [ He stops in his tracks, eyes widening. For a moment, he wonders if Klaus is insane, to be willing to take on such a feat with a complete stranger. He continues walking and even draws him closer, suddenly feeling very sullen about the fact that a considerate partner is apparently a novelty to this man.

It's really none of his business, and Klaus seems cheerful enough, but the thought is enough to put doubt in his mind about continuing. ]

Begging is fine. [ It's simple, and he's not quite ready to dive into some of these more extreme kinks yet.

They're now in front of his apartment, and Siegfried turns to him, brow furrowed. ]

Are you certain you want to go through with this? You seem more than comfortable with sex, but you've barely arrived.