She just can't seem to stay away from the bad boys!
They "have been neighbors for years. They have a lot in common and are taking things slowly," claims a source
Denise and the rocker were spotted eating breakfast at Marmalade Cafe in Calabasas on Sunday.
"Nikki was telling stories, and Denise was laughing," said an onlooker.
Ha. Lots of luck!
[Image via WENN.]