He'd been so caught up in Teddy being back, that for the first few days (where he'd skipped a few classes himself), Billy hadn't even noticed Jason wasn't around. Not until he'd been informed that Jason was hiding out, that something was going on with him down in Rapture. After seeing the bruises all over Teddy from his run-in down in Rapture, the very thought of the city makes his stomach turn.

He hasn't gone seeking Jason out yet, mostly because he's not sure he's wanted yet. But Billy spots him ducking off the path, and he speeds up to catch up to Jason before he loses him in the trees. "Jason!"