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"If I Didn't Have You (I'd Have Somebody Else)" is an amusing song by Tim Minchin. It points out that, contrary to the wisdom that there's one perfect romantic parnter out there, if he wasn't with the woman to whom he is presently attached, he would probably be with another woman and having an equally (or possibly more) fulfilling relationship. And moreover, it's unlikely that he's found his soulmate at the age of seventeen.

via reddit