Ashley Olsen is rumored to have called it quits with her boyfriend of a year and a half, Greg Chait. It seems the 27-year-old Tsubi jeans owner's issues with commitment are to blame for the rift. "When they were together over the holidays, she told him she was looking for something more permanent," said a source close to Chait. "He wasn't ready for that. So they decided on an amicable parting." Olsen's rep has not commented.