Lyric discussion by raiderroadtrip00 

I'm a guy, This is what I can assume from the lyrics: The line "I don't know who I am without you" defines the song. Since her relationship started, she has experiences some mental or emotional growth . She hasn't done anything to her partner, but her new-found emotional identity must be further explored outside of their relationship. Apparently her relationship has lasted so long, that breaking up is going to be troublesome.

My Opinion:
While its great that she solved her problem, and grew-up somehow - she is throwing away a perfectly good relationship. I wonder how the partner feels about being told that they haven't done anything wrond, and they are loved, but they'll need to find someone else? This song beautifully and poetically equates to the crappy "Its not you, Its Me" excuse that people give for breaking up.

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