Despite his instincts screaming at him that something's wrong, something happened, Jay admits the possibility is making more and more sense. Easier for the Mirror to mimic Tim than it'd be for Tim to get behind the glass and back without anyone but Jay noticing. Occam's razor.

(Or maybe it benefits Tim if Jay doesn't know. That doesn't really fit what he remembers either, because why would he write on the mirror if he didn't want Jay to know?)

Jay shakes his head. No, he didn't say what.

"Can't say for sure it was nothing, though. I mean, I don't remember getting up before three, but..." He shrugs. Just another day, right?