"I am not, though you may be the most desperately lonely mortal I have ever met." That may be saying something considering....

Well, a lot of things and people his mind simply skitters away from.

Once he's sure Zerxus is coming with him, willingly and knows Zerxus is aware of it, though he simply teleports them both into the middle of the library. He'll draw a map when (or if) he decides Zerxus should be allowed access to the library.