Treacherous is about Harry! Taylor's mentioned before that I Knew You Were Trouble and Treacherous are about the same person. It's so obvious that IKYWT is about Harry from the guy's style, tattoo, the necklace in the video, and how she saw him kissing a blonde. It's exactly what happened to their relationship when it first started last March.
This makes sense. Did The Lord say "Treacherous" and "IKYWT" were about a same person?
you believe that list? all of those predictions were wayy WAYY too extreme!!
"Seeing is Believing" - that's all I need to say to answer you.
EDIT: You know that I look down on ppl, right? How come you have a theory that I would buy a crazy fck random rambles?
did y'all see that tattoo comparison between the guy in Trouble video and Harry ?? the similarity is too big to ignore!
the first time I saw Revee, I thought of John with his tattoo but I think she didn't try to embody anyone this time. she didn't even involve in making scenario. she just tries to tell people her theory of "madly falling in love with a bad guy"
but both are about Mayer 
They stay doing the most.