Lydia can't help the semi-smug, semi-amused smirk that tugs at the corners of her mouth. Apparently he's especially interested and isn't quite as good at hiding it as she happens to be.

Finishing up her salad — or what she had time to eat, anyway — Lydia puts the lid back on it and nods. "Tomorrow's fine." The smirk on her face has a warmer feel to it, now. "I'm looking forward to it," she adds, and then finally, "if you don't want to be late to your next class, we should get going..."