The audiences on POP have been reweighted since I Knew You Were Trouble peaked. BL has already broken the spin record but it is just impossible for a song to reach Taylor's audience.
I don't understand how BL has snatched so much success it's at best a mediocre song that deserved a top 10 spot on the charts.. I like r&b but this just doesn't scream hit to me, and it will be forgotten in no time