Since a lot of things weren't the same as in the dreams, Alex decided not to tell Kyle what the two of them found in the dream he'd had. If it came to it, he'd explain why he didn't say anything beforehand, but there was no reason to rock the boat. For all he knew, there wasn't even going to be a secret basement room in the cabin in the real world.
"Sounds like a plan. I hope I didn't interrupt any plans you had." Not that he really expected Kyle would tell him if he had. He wouldn't want to make him feel bad.