Matt smiles too, giving a pleasant hum as he shifts under Obi-Wan's weight. He makes another, similarly happy noise into the kiss, lips parting and tongue darting out. His neck arches as Obi-Wan starts to kiss along his jaw. Not a lot. A small invitation to keep doing what he's doing.

"Can you tell I like you on top?" he murmurs curiously. "By--feeling what I feel?"

Or is it from the everything else about him? Matt would accept either as an answer, really. His hands slide up Obi-Wan's sides, rub back down, try to slip under the undershirt-type layer.