Dominic isn't entirely sure what he's supposed to show. That he can take it? Surely that's a thing evidenced by Wesley as much as anything else. But he's not going to complain, not now that it finally feels perfect, even with his hands bound, even though he can't reach back to touch Wesley.

He finally accepts it, finally relaxes into the sensation and the bounds. It's not that Wesley has all the control, just that he has enough and Dominic trusts him with it, knows that he hasn't lost it just because Wesley has it.

It's comfortable, and Dominic thinks he could get used to this feeling of trust.