Criticized for resembling Rihanna's "We Found Love" music video, Taylor Swift's "I Knew You Were Trouble" depicts an unhealthy relationship. Both "We Found Love" and "I Knew You Were Trouble" begin with a monologue of the female perspective of the unhealthy relationship represented in the videos. Swift dates a rocker who could care less about her and treats her like crap. But in Rihanna's there are references of drugs and addiction. Taylor Swift's is the PG version of Rihanna's.
There are rumors floating around she wrote this one about One Direction's bad boy Harry Styles.