Don’t let the guitar disarm you, Taylor Swift is fiercely protective of her rumored other half, teen actor Taylor Lautner. The two Taylors have reportedly been dating for the last two months and been snapped on a string of high profile dates all over Los Angeles, but the country cutie can’t help but feel threatened by Lautner’s friendship with his Twilight co-star, Kristen Stewart. A furious Taylor Swift is incensed by Kristen’s alleged flirting with her boyfriend, tabloid tipsters blab in the new issue of London’s Now! Magazine.

Taylor was famously dumped by boy bander Joe Jonas — by phone, no less — after the crooner fell for actres Camilla Belle. Taylor’s determined not to be bested by another woman.

“She trusts Taylor but it drives her crazy to see Kristen hanging off him all the time,� a source tells Now.

The couple have spent the last few weeks apart as Taylor — who plays werewolf Jacob in the films — has been busy promoting The Twilight Saga: New Moon. In recent weeks, Taylor and Kristen have been frequently photographed together at New Moon premieres – and all the private time between the two has rattled the “Love Story� singer.

“She doesn’t buy the whole notion that Kristen only has eyes for Robert Pattinson. She believes she’s secretly longing to get her hooks into Taylor even though they’re just good friends.�

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