Hilton, 30, had started dating Vegas club owner Waits shortly after her final split from former Hills star Douglas Reinhardt.
“They are broken up. It’s sad, she cares about him a lot and thinks he’s a great guy but they really hit a rough patch,” Us magazine quoted a source as saying.
“Cy’s found it difficult to live his life with her in the spotlight and that’s what caused their split. No drama, it’s amicable, but things didn’t work out,” the source added.
Launch the gallery to take a look back at Paris Hilton and Cy Waits in happier times.