[Well, that's because the X-House is a house. And not a superhero tower! But that's neither here nor there.]

Sometimes they're in the library. But dude... you should just leave them alone, yeah? I know you like to know everything about everything, but that's the kind of thing you should leave alone. Some secrets are better left that way.

[... and he really doesn't want Robin muddling with Kurt's own past.]