Taylor's new single Begin Again

Taylor describes her new song ‘Begin Again’ on GMA!!
“It’s actually a song about, kind of, when you’ve gotten through a really bad relationship and you finally dust yourself off and go on that first date, after a horrible break up. And the vulnerability that goes along with all of that.”

If the video gets removed or you can't view it you can listen to the song here
theories of who it's about? I think the bad relationship is Jake, and the nice guy is Will Anderson from the band Parachute