Fifty Shades of Gray star, Dakota Johnson, has reportedly split up with her partner of eight years, Chris Martin, and has now revealed one of her non-negotiable dating rules

A Coldplay fan posted a video of lead singer Chris Martin singing Sparks at their Las Vegas show, following reports of his breakup with actress Dakota Johnson.

Chris Martin and Dakota Johnson have called it quits after about eight years of on-and-off dating, People reports. The magazine reported Wednesday (June 4) that the 48-year-old Coldplay frontman and 35-year-old actress recently split for good.