Tough girl Christina Perri dishes all the details to JJ about growing up in Philly, getting into fights with girls in school, and the boy problems that inspired her to write the song that brought her success, "Jar of Hearts."

The singer brought us all the way back to 2009 in her parent's house when she sat down to write "Jar of Hearts" after finally deciding to stop seeing a guy she had been in an on and off again relationship with for years. Soon enough, Jason Mraz's manager found her on Youtube, her song debuted on So You Think You Can Dance, and the rest is history!

Make sure to check out her latest single, "Human", which she says is about self forgiveness.

Watch the full interview!