Taylor looks to take Selena down after Sel turned on her at the beginning of the video, but we never see who came out victorious -- and unfortunately, Selena doesn't know, either.
"I have no idea," Selena told us of who she thinks won the fight. "Maybe there is more that's going to come -- because you don't know."
But, like, I need to know... can we demand a sequel?
Selena went on to explain that the video actually had a slightly different ending, but at the last minute director Joseph Kahn decided to add in a bit more action.
"It was actually funny because the video was originally going to end with us just looking at each other, and then Joseph came in and was like, 'I think it would be really cool if you guys just went for it,'" she said. "And I was like, 'I love you,' and she was like, 'I love you, too,' and then we just slap each other. It was fun."
Obviously, there is no bad blood between these two besties in real life, considering Taylor just tweeted how much she loves Selena's new single, "Good For You," which she heard before it was officially released.
"She's so happy. I played her the one with A$AP [Rocky] and she's just very animated, which I love because then I know. She's very honest, too; she'll be like, 'I don't know, I don't know' and then I'll be like, 'OK she doesn't like it,'" she said. "But when she hears something [she likes] she's super 'Oh my gosh.' It's the best, it's so great, because then I'm like, 'OK, it's approved.'"