There are several elements at play, here; Jae is curious, for starters. Even though there's a lot about Shrieky's anger that ruffles Jae's feathers, he feels like it's something he could do with being exposed to. He takes the idea of camaraderie on the cohort seriously, as well, because being abducted and trapped has been so personally traumatic for Jae.

And there's just the fact that he himself doesn't like being without anything to do for so long. He gets lonely, and then he starts stressing. It's better to be social.

"Hello, mermaid," he greets when he arrives, easy-going. (Mermaid sounds like in-eo, and does not have a handy youtube.) He's got a jacket on because it's fucking cold, but he's still dressed relatively sporty - fashion is pain - including a neon pink bag full of things he's not sure if the other man would have packed. Like several beach towels.