Ex-Boyfriend Harry Styles Featured In Taylor Swift's New Single 'Out Of The Woods' Co-Written With Lena Dunham's Boyfriend Jack Antanoff?

Before the release of Taylor Swift's new album "1989," the singer will be releasing a new single that is allegedly about yet another former boyfriend—and many has a guess as to who it is.

During a recent interview on "Good Morning America," Taylor Swift previewed the song "Out of the Woods," and discussed its inspiration from a former relationship with a boyfriend.

"'Out of the Woods' is one of my favorite songs on this album," said Taylor Swift according to E! Online. "I wanted to make sure that these songs sounded exactly the way that the emotions felt when I felt them. This song is about the fragility and kind of breakable nature of some relationships. This was a relationship where I was kind of living day to day, wondering where it was going, if it was going to go anywhere, if it was going to end the next day. It was a relationship where you kind of never feel like you're standing on solid ground."

"That kind of a feeling brings on excitement but also extreme anxiety and kind of frantic feeling of wondering—endless questions. And this song sounds exactly like that frantic feeling of anxiety and questioning, but it stresses that even if a relationship is breakable and fragile and full of anxiety, it doesn't mean that it isn't worthwhile, exciting, beautiful and all the things that we look for."

Although Taylor Swift is staying silent on which former boyfriend she is referring to, many people believe it is based on One Direction's Harry Styles, who is also allegedly the inspiration behind "I Knew You Were Trouble."

Reportedly, "Out of the Woods" is co-written by Swift and Jack Antonoff, who is currently the boyfriend of Lena Dunham.