He listened with a blank expression. Blank because that's what he always did when he was processing.

"If I didn't worry, I wouldn't be a friend." He didn't bring up how his girlfriend had apparently helped him out through those vents either.

"I know what your kind of life is like. Liz doesn't and she worries." As far as Alec knew, she had no reason first hand knowledge anyways. "It's called... Caring"