Caspar is definitely staring more than a bit, his gaze flicking between where he's working with his fingers and what Rose herself is doing like he's not sure where to prioritize looking.

"O-oh! Okay." Okay! He hesitates, just for a moment, as his gaze flicks over her body again, as if his brain is stalling out - then he seems to make a decision and leans over to take that first suggestion, still watching her face as he presses his lips cautiously to her breast, dragging his tongue over soft skin.