"I'm not lying!" Ezra protests, hastily preparing to justify. Crap, he'd forgotten about Garth'zel being able to read him like that. "I don't feel good. Not... not sick, just..." But words fail him, because he doesn't want to admit he's sad and upset and growing desperate. He doesn't even have all the words to describe how he feels. But that qualifies as 'not good,' doesn't it? Doesn't it?

So he wraps it up with a plaintive, "Can't I just stay here with you?"