Are Denise Richards and Nikki Sixx Dating?

Charlie Sheen's ex and Mötley Crüe musician spotted having breakfast together

Denise Richards and Nikki Sixx aren't picking out china patterns just yet.

Although a report claims the two are dating…

I'm told that may be a bit of a stretch.

Here's the deal: The Mötley Crüe rocker, 52, and Charlie Sheen's ex-wife, 39, actually live down the street from each other and recently went out for coffee a couple of times. Us Weekly reports they had breakfast together on Sunday at a local cafe.

"He is not her boyfriend," a source tells me.

If they do get serious, a little modern-day Brady Bunch could be in the works. Richards and Sheen have two daughters, while Sixx has four with ex-wives Baywatch star Donna D'Errico and Playboy Playmate Brandi Brandt.