A source close to singer/songwriter/serial dater Taylor Swift swears the pop star’s latest smash “I Knew You Were Trouble” was scribed about the split with One Direction star Harry Styles last spring, before the superstars went public with their relationship late last year. The source exclusively told Radar Online, “’I Knew You Were Trouble’ is 100 percent about Harry. She knew he was young and popular with the ladies and wasn’t ready for a serious relationship, but somehow hoped she could make it work.” The source adds, “Taylor was crushed over Harry the first time they dated, and like she always does, she penned a song about him to deal with her broken heart.” In more stressful Swift news, a ticket company is suing the pop star for allegedly pocketing $2.5 million from a cancelled concert. She was fronted the money for a planned performance at the Capital Hoedown in Ottawa, Canada, which was eventually cancelled.
