It's never particularly enjoyable when your partner disappears off for a phone chat with their ex.
And imagine if that ex was Britney Spears.
Well, it seems that celebrities are no different in leaving the door open for the green eyed monster to sneak in, after reports that Cameron Diaz is fed up with Justin calling his ex-flame Britney.
The young popstars split in 2002 after spending three years together and Britney is now on her second marriage.
Justin proposed to Cameron over the festive season but it's clear she's had enough of Justin tinkling Brit.
The Daily Record reports a friend of Cameron's as saying: "Justin says he's being supportive, but Cameron has told him to cool it."
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