Singer Sheryl Crow and cyclist Lance Armstrong have said they are separating, five months after announcing their engagement.
Crow and Armstrong have been together for over two years
A joint statement gave no reason for the "very tough decision", and they appealed for privacy "at this very difficult time".
Armstrong, 34, who has won the Tour de France a record seven times, has been married once before.
He and Crow, 43, have been together for more than two years.
"After much thought and consideration we have made a very tough decision to split up," the statement read.
"We both have a deep love and respect for each other and we ask that everyone respect our privacy during this very difficult time."
Crow met Armstrong, a testicular cancer survivor who has three children from his first marriage, at a charity event in October 2003.
Grammy award-winner Crow released her fifth album, Wildflower, last September and said that Armstrong had been the inspiration for it.
She performed a free concert in Austin, Texas, Armstrong's home town, to mark the ninth anniversary of his cancer diagnosis.
The pair have been living at a ranch near the town.