So, what are the clues?
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There have been long-standing rumours that Tayor was once secretly dating her old best friend and supermodel Karlie Kloss. They were called #Kaylor.
Taylor's fans know that a daisy - yes, the flower - is a known symbol for the 'Kaylor' relationship. Taylor has even 'liked' a fan's image on Tumblr which highlighted the daisy-Kaylor connection.
Fans pointed out that the scene in the video where Taylor walks out of a burning trailer is her literally walking out of the closet.
More obviously, Taylor dances around with friend and choreographer, Todrick Hall in the music video.
In the scene, her hair is an homage to the bi flag (pink and blue).
In fact, Taylor's latest album cover 'Lover' is pink and blue.
It's a pretty compelling fan theory, but one to also take with a grain of salt!
One thing we can all agree on? The song AND music video is amazing.