Justin Bieber Now He's Hanging Out With ... Michelle Rodriguez?

Justin Bieber and Michelle RodriguezIn search of someone who could help protect him should Orlando Bloom strike again, Justin Bieber hung out Wednesday on a yacht in Ibiza with none other than Michelle Rodriguez. 

There's nothing romantic going on here -- at least not in these photos -- and besides ... MRod's been hanging with a completely different skinny and often shirtless guy in Zac Efron

If it came down to it, we feel pretty confident Rodriguez could take Bloom ... and Bieber ... and even Efron in a fight.