He raises an inquisitive eyebrow at the star, but doesn't say anything.

Straightening his wrist upon instruction, Tristran attempts to flick the pebble across the water.

Oh, he really wants to impress her, but...well, he really isn't any good at that. Sure, the pebble skips a little farther this time, but it still only skips once before plunking into the water again.