In my last dysfunctional relationship, this was set as the girl's ringtone on my phone early on. I always thought it was a bit of a message to her, because she was always fighting against our relationship (stating, knowingly, repeatedly, that long distance never works and that she didn't like me that much anyway) but this song summed it up so perfectly to me at the time: love, love, love, this isn't it. You don't even know, girl!
And it wasn't it. It kept going, and eventually I got a new phone and it didn't have Giant Drag ringtones at first so she ended up with Stand By Me or something, so I guess I was right but eventually there was an it (and it was lousy) and it would have been avoided entirely if I had just bothered to look up what people think this song means.
I quote from SongMeanings user lovelornloser:
to me this song seems to be about an over obsessive person who deludes infactuation with love and hates the other person for not liking them back.
Well, shit.
This happens a lot (some day I will write about Helena by Nickel Creek), I love some song at a certain point in my life but never really pay any attention to it, and then it ends up perfectly describing my problems to me. It's a shame I didn't realize this one until right now.
I am a crazy person.
Update: This post is less confusing if I explain that I never hunderstood that "This Isn't It" means "this isn't love". I always assumed "love, this isn't it" meant, like, "darling, this isn't all there is to this". Yeah, I am dumb.