He's had fun with Collette so wacky hijinks are a go! Maybe something in the snow? Caspian's pretty well-acclimated right now, he's got a place to live, and he goes out hunting, and he knows his way around, so if she'd like to try ice skating or dogsledding, he'd be glad to go along. And when she gets tired out, take her somewhere warm for hot chocolate or something.

Flirting omg! He is such an enormous failboat when it comes to that kind of thing. He's been flirting with Ella, though, so he might be not be quite as clueless.