Don't phunk with Katy's heart.
The "I Kissed A Girl" hitmaker is making headlines after publicly bad-mouthing her ex-boyfriend Travis McCoy during a recent performance at the Wiltern Theatre in Los Angeles.
"Girls, if you have ever dated a boy " specifically the lead singer from Gym Class Heroes " don't do it! Boys should have a heart. You know what I mean girls? Boys just want the milk, but
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