Taylor Swift: ‘When I’m in love I’m just stupid’ (VIDEO)

Taylor Swift has admitted that when it comes to love, she can be a little stupid.

The 22-year-old "Sparks Fly" singer told "Tonight Show" host Jay Leno this week that being a Sagittarius makes her "blindly optimistic" in the face of romance, despite a string of bad breakups (many of which she has written about).

"When I'm in love I'm just stupid about it," she said. "I trust people constantly, and then I always am like, 'I'm not going to trust people anymore. I'm going to be one of those dark, twisty girls who guys love because they're all guarded and stuff.' And then I just trust people again -- all the time."

Though Swift did not clarify which of her exes turned out to be untrustworthy, her discography might provide a few clues.

Back in 2008, she released the song "Forever & Always," a song rumored to be about ex-boyfriend Joe Jonas. The heartthrob reportedly broke up with Swift over the phone after falling for his "Love Bug" co-star Camilla Belle.

A year later, Swift had a three-month whirlwind romance with "Twilight" star Taylor Lautner after they met on the set of "Valentine's Day." After they broke up in December 2009, she reportedly wrote about her mistreatment of the relationship with her aptly titled "apology" song, "Back to December."

Swift followed up her relationship with Tay with a fling with musician John Mayer, who is 12 years her senior. She reportedly wrote the track "Dear John" about him, which includes the not-entirely flattering lyrics: "It was wrong/Don't you think nineteen's too young/To be played/By your dark, twisted games/When I loved you so."

It appears not even Jake Gyllenhaal is safe from Swift's pen and guitar. After a brief affair with the "Love and Other Drugs" hunk, Swift was dumped on New Year's 2011 -- a moment that may have inspired her next album.

"There's just been this earth-shattering, not recent, but absolute crash-and-burn heartbreak," she told Vogue in the February issue, "and that will turn out to be what the next album is about."

Maybe after all this, her next boyfriend will be careful not to act stupid.

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