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Rihanna's latest high-profile hangout is raising questions about a possible new romance or a new collaboration. 

The pop star was spotted dining out with Coldplay frontman Chris Martin on Sunday night at the Giorgio Baldi restaurant in Santa Monica. TMZ says the two avoided being photographed together by leaving through separate exits on their way out. 

Chris was recently "consciously uncoupled" from his wife actress Gwyneth Paltrow, and Rihanna is also rumored to have split up with rapper Drake. 

But Chris and Rihanna have worked together in the past as well.  She was featured on the track "Princess of China," on Coldplay's 2011 album Mylo Xyloto

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