If the headlines of the past decade are any indication, Katy Perry and Taylor Swift may be this generation's pop music feud. Although the pair were once friends (at least, according to their lavish social media exchanges), there has been a lot in the way of coded texts and veiled comments in recent years. Perry spoke the conflict even right on earlier this summer. But how did these two transition from crazy love to bad blood? Here's What You Need to Know.

July 2009

It seems more than good between the budding young pop princesses Swift and Perry, you might even call it a crazy love affair. In a now deleted tweet , Taylor Swift shares how much she loves Katy Perry's “Waking Up in Vegas” video. So much she wants to hang a poster of the “I Kissed a Girl” singer on her wall. Perry answers by inviting her to write a song together for an upcoming album.

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