Lyric discussion by starsparkler 

A friend said this song reminded her of me after I parted ways with my muse, a man I loved but needed to get over because he didn't love me back.

I think the narrator's "true love" could be someone she made up entirely ("he was a beautiful fiction"), or it could be that he was in her life for a time, but left because of things not working out ("my true love is a man that I haven't seen in years"). When she says "the highway is my great wall" it represents the obstacle between her and her muse/the man she lost.

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