Well then http://mobi.perezhilton.com/2016-08-21-taylor-swift-tom-hiddleston-instagram-unfollow-relationship-social-media-speculation#.V7njUcRHanM

I read that apparently Instagram has this bug where if you block someone you follow they don't appear on your following list when you scroll but pop up when you search. So she didn't just unfollow, she blocked...