Showbiz
Rex Features
Biel was apparently "fuming" at the chemistry between the pair after photographs of the shoot emerged on the internet.
A source told Star: "Jessica wasn't there, but she heard about it, and everyone was gushing about the intense chemistry between Rihanna and Justin.
"That's not the kind of news a girl who's waiting on a proposal wants to hear, and she was fuming."
The 26-year-old Easy Virtue star is said to be "sick to her stomach" after seeing Rihanna wearing a revealing outfit while filming with Timberlake.
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