Pink and her husband of two years, motocross racer and former "Surreal Life" star Carey Hart, have separated, People magazine reported.
Her publicist, Michele Schweitzer, told the magazine, "Pink and Carey Hart have separated. This decision was made by best friends with a huge amount of love and respect for one another. While the marriage is over, their friendship has never been stronger."
TMZ.com spotted Hart over the weekend in Las Vegas posing for photos with an unnamed woman.
Pink, 28, and Hart, 32, met at the 2001 X Games and broke up for a time in 2003, but in 2005, the singer popped the question to her beau as he sped around the track during a competition in Mammoth Lakes, Calif.
They married in January 2006 at a non-denominational ceremony in Costa Rica. Among the 100 guests was Lisa Marie Presley.
In August 2007, amid reports that the marriage was on the rocks, Hart dismissed the stories as "just a bunch of trash talk."