Denise Richards says she is taking her romantic relationship with Motley Crue rocker Nikki Sixx "very slowly."

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Richards, 39, was previously married to actor Charlie Sheen. They have two young daughters together.

Sixx, 52, is divorced from Playboy Playmates Brandi Brandt and Donna D'Errico. He has a total of four children from the two previous marriages.

Richards said in an interview for Bravo's "Watch What Happens: Live" that she has "gone on a couple dates" with Sixx, UsMagazine.com reported Monday.

"If anything's going to develop, you want it to develop on its own," she said. "That's the God's honest truth. We're taking it very slowly."