Jay Z has a phone line just for Rihanna to call.
The Roc Nation mogul has a close relationship with the Diamonds hitmaker and his wife Beyonce was said to be "livid" when she discovered the singer is able to contact her husband at any time of the day.
A source said: "Jay has several phones, one of which he keeps reserved for Rihanna, supposedly to discuss business interests.
"It's obvious when she calls because he'll interrupt meetings, even walk away from the dinner table to speak with her.
"Beyonce has always been aware that he has several different numbers, but when she discovered Rihanna has a hotline to her husband, she was livid.