[The suddenness of that is intense, and has him red and panting, cock hard almost dizzyingly fast. He inhales sharply, reeling at this, the way his body feels almost alien to him, senses beyond his understanding, movements and reactions beyond his control. He's definitely about ready to cry already. It's embarrassing, but there's also just the horror of having no agency at all, even in what or how much he participates.]

You--don't understand. I really don't think I'm suited for this at all. I've never even had sex.

[It's not that he doesn't understand porn or pleasure or that being a literal sex slave is a thing or even the appeal of someone inexperienced, it's just hard for him to apply any of that to himself.]

Plus isn't this kind of... This kind of thing isn't--

[How do you politely say "I'm not into being sexually assaulted" to a guy?]