42. Taylor Swift, "Love Story" (2009)

Well, this one's kind of self explanatory, isn't it?

It almost doesn't make the cut off, but Taylor's "Love Story" was the love song of the last half of the decade.

Even if Taylor isn't your cup of tea, I'll wager you either liked the song, the video, or a cover version.

Bruno Mars, "Just the Way You Are" (2010)
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