The Plot Thickens: Gaga's Ex-Fiancé Christian Carino likes Irina Shayk's Sexy Insta Swimsuit Pic

That's it, that's the whole story. Christian Carino liked this photo Irina posted to Instagram today.
 Petty, much? Does this give credence to the Gaga B-Coop rumors? Yikes!

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What's the pettiest thing you've done after a breakup?