While I’m not a huge fan of the first part (Ghost), I really like Haunted by Beyoncé.

I think one thing that appeals to me is the slight subversion with

I know if I’m haunting you, you must be haunting me

At first glance((or at first listen)) you just assume that it’s “If you’re haunting me, then I must be haunting you”.

But that’s not the line, and to me it implies a sort of unawareness of being haunted.