The 'Stupid Girls' singer - who has been plagued by rumors her marriage to motocross star Carey Hart is on the rocks - is said to be tired of her husband's dalliances with other women.
A source told the New York Daily News newspaper: "Divorce is just around the corner. Carey has this one blonde in particular that he takes everywhere, even public appearances. But Pink knew what she was getting into!"
Pink allegedly agreed that Carey could "play away from home" while she is on tour, but the 28-year-old singer is now getting broody and wants to start a family.
She was reportedly overheard telling friends at Hollywood restaurant Eleven that she wanted time apart from Carey after just 21 months of marriage.
A source said: "She told them, 'We're just not getting along anymore. We each need our space. We need our distance. It's not like it was when we first started.' "
When asked about their marriage last month, Carey, 32, said "everything's fine".
A representative for Pink, 28, said rumors the couple are splitting up were "complete bull