Ellie Goulding has split from Radio 1 DJ boyfriend Greg James, it has been reported.
The pair, who have been dating for 18 months, are believed to have parted ways due to busy work schedules.
A source told the Sun: "Things had not been right for a while but they only called it a day a month ago.
"It was just a real struggle for them to be in the same place at the same time.
"The split is amicable and they are still friends."
The singer replaced Jessie J as main support for Katty Perry on the US leg of the tour after he London singer was forced to cancel several gigs due to a broken foot.
Goulding is currently working on the follow-up to her 2010 debut Lights.