Taylor Swift and Jack Antonoffs Feud Escalates

She has been beset by rumors that she allegedly had bad blood with her longtime producer after he was not featured on her most recent album.

But  has appeared to further clear up her relationship with Jack Antonoff, who has co-written several of her latter-day hits.

While speaking to the  on Tuesday, the 36-year-old confirmed that she was still close with Antonoff, 42.

'Jack Antonoff is a collaborator of mine and one of my best friends,' she said.

It comes after Swift signaled she was on good terms with the producer by with her father and friends earlier this week.

In the interview, the singer went on to explain the successful songwriting formula that she and Antonoff have honed over the years.

'We established this thing that we love to do, and we call it the rant bridge,' she shared. 'It’s basically like stream of consciousness, endless pouring-out of emotion, intrusive thoughts, blended with metaphor, with discussion, with shouting.'

According to the Shake It Off singer, the purpose of the 'rant bridge' is to 'feel the most intense of what that feeling is that you’re trying to establish over the course of the song,' and the goal is for it 'to be kind of a crescendo.'