Taylor Swift's New Song Disses Ex Jake Gyllenhaal?

Taylor Swift, known for venting her emotions about love lost into her lyrics, has a new song, "We Are Never Ever Getting Back Together," that is reportedly about ex-boyfriend Jake Gyllenhaal.

The actor was linked to Swift from 2010 into early 2011 in on-and-off again relationship. One insider insisted that Swift's new break up tune is "definitely about Jake," according to Us Weekly.

According to the lyrics of the song in which Swift sings "Baby, I miss you and I swear I'm gonna change," the songstress had allegedly grown weary of the make-up, break-up cycle of her relationship.

In the music video for "We Are Never Getting Back Together," a dark-haired man was cast wearing a navy blue down vest that Gyllenhaal was photographed in during a date with Swift in the past. Also, Swift wears a bracelet in the video, which resembles the $100,000 gift Gyllenhaal reportedly gave the singer for her birthday.

In the past, Swift is believed to have incorporated experiences from romantic trysts with the likes of Joe Jonas, Taylor Lautner, and John Mayer into her music.

The country music star's song "Dear John" was most poignantly directed at Mayer, whom she collaborated with on the song "Half of My Heart" when a romance reportedly blossomed.

"Dear John, I see it all now it was wrong / Don't you think nineteen's too young to be played with / Your dark twisted games when I loved you so / I should have known," Swift sings on the track, found on her 2010 "Speak Now" album.

Swift, who was 19 years old at the time, is believed to have dated Mayer, 11 years her senior, for a short time. "Speak Now" was released shortly after the music stars were romantically linked.

Mayer, now 34 years old, spoke out about the track and said the lyrics made him "feel terrible."

"I didn't deserve it," the Grammy Award-winning singer told Rolling Stone magazine. "I'm pretty good at taking accountability now, and I never did anything to deserve that. It was a really lousy thing for her to do."

Today, Swift is rumored to be in a relationship with Conor Kennedy while Mayer is linked to "Part of Me" singer Katy Perry.