"I've been dreaming." Were Ronan anyone else, it could be taken as an answer to Adam's question. Normal people need to sleep to dream. Technically, Ronan also needs to sleep to dream too but there's a marked difference between sleeping and dreaming in Ronan's case. Saying one when asked about the other is as good as tacit admission that no, he hasn't really been sleeping. "You know what happens when I sleep, Parrish. That shit's not as easy to hide without Declan's silver fucking tongue."