Pet Names

In the pages of books that I lent you I'm finding the love notes you made Little fossils to read, yeah they're awfully sweet But they're painfully far out of date And whenever I'm heading downtown I always tend to zone out My autopilot takes over And before I know it, I'm back at your house I was under the impression that you wouldn't stay You're not on my mind much But you're underneath it in so many ways I kept accidentally Referring to you as my girlfriend For a while after I had to go Only took me a week to unlearn it After eight months of calling you so I had to retire your pet names They're filed away on a shelf As much as I'd want to reuse them They'll never mean anyone else I was under the impression that you wouldn't stay You're not on my mind much But you're underneath it in so many ways