Barcus's first touch gets the expected rush of pleasure, but also of relief: Barcus had observed the very physical sign of Bel's need for him, and was addressing it. Bel knows that this is showing on his face because he sees no reason to hide how he's feeling; quite the opposite, since he wants Barcus to know how good he feels.

Gods, he has amazing hands. Which made sense for an artificer to have such exquisite control. "That feels wonderful, Barcus." Bel is smiling back, and was just about to suggest that Barcus shift in position so Bel could reciprocate when Barcus ducks his head and...

Bel gasps and a low moan escapes his lips. Right, change of plans. He'll be reciprocating later. In the mean time, he's making sure his legs are not in Barcus's way and his hands reach for the back of Barcus's head. Normally he'd be running his fingers through a lover's hair; he hopes that the massaging gestures feels good and not weird, because his hands need to be doing something for Barcus right now. "That's... yes, keep going."

Feeling Barcus take him in his mouth gets more approving sounds. Barcus's contented face strikes Bel as looking as if he could fall asleep in that position, which is an odd mental picture to have during sex. "Didn't think my cock was that soothing." He just blurted out because what even is a filter? Certainly not needed at the moment.