At one time the toothy smile might've been frightening, or Ienzo would've read it as a sign of aggression. Not anymore though, they'd spent enough time together for Ienzo to have learnt a lot of his emotional tells.

Though... the way Demyx's gills move now is something he hasn't seen before, and its enough to make him tilt his head curiously.

"Oh?" Ienzo's feels flattered then, because Demyx had been making a lot of effort to bring him things recently. The fossils especially had been a welcome addition to his collection back home. Now he wanted to show him something?

It added an odd bundle of nerves to Ienzo's chest; a weird blend of shyness and ...hope? Ienzo would be hard pressed to explain why, but would admit it was due in part to his intense fondness for the Mer. Demyx bringing him things, having thought about him even while they weren't together...it was nice, really nice. And helped Ienzo stave off the hard pellet of reality wedged at the back of his mind: They wouldn't ever be more than friends. Because how could that even work?

Ienzo swallowed, interrupting the line of thought before it lead him somewhere despondent. Bringing himself back to Demyx.

"That sounds fine to me-are we swimming or walking?" Given the wind he wasn't that keen to take a dip (he'd come prepared, wetsuits for spending time near Mers seemed like a given) but, he'd happily follow Demyx to wherever he wanted to take him.