Photo: Justin Bieber staring at Wiz Khalifa's wife, Amber Rose’s cleavage

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His on/off relationship with Selena Gomez is back on right now but that doesn't mean Justin Bieber can't look at other women.  The 20-year-old pop star was thrilled to hang out with Wiz Khalifa's wife Amber Rose on Thursday and after begging her for an image, he couldn't take his eyes off her magnificent cleavage.