While she's not prepping extremely public Taylor Swift insults, Katy Perry is apparently rethinking her romantic decisions. The "Firework" singer and ex-boyfriend John Mayer sparked reconciliation rumors after a recent dinner resulted in Mayer visiting Perry's L.A. home — until 4 p.m. the next day, according to the Daily News. Reps for Perry and Mayer have yet to comment, but if you're worried about how Perry's rumored current beau, Diplo, is taking all of this, don't be. A source tells Us Weekly that Perry and Diplo were "never serious."

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