The 23-year-old's whirlwind romance with Styles, 18, went south last week during a vacation to the British Virgin Islands where they had a fight -- after which Swift cut her holiday short and flew solo back to Nashville.
Taylor's always been honest about the fact that she regularly uses her personal relationships as material for her songwriting. In the past, she has written songs about famous ex-flames including John Mayer, Jake Gyllenhaal, Taylor Lautner, and Joe Jonas.
"I've always lived by the theory that if a guy doesn't want me to write a bad song about him, he won't do bad things," she told Us in 2010. "And he shouldn't, you know?"
She's rich because she writes honest music about real life. I can't really pick on her for that... though I'm sure many others will.
Taylor Swift Flashback...."Picture To Burn" from 2008...