Actress Rose McGowan is engaged to director Robert Rodridguez, a source close to the actress tells PEOPLE.

McGowan, 34, met Rodriguez, 39, in 2006 when he directed her in the Planet Terror portion of the Grindhouse double feature.

“He’s my best friend,” McGowan told People last June. “We instantly became really good friends.”

Engagement rumors swirled for months as the couple attended Hollywood events, and recently McGowan has been sporting a large diamond ring on her wedding finger.

McGowan previously was engaged to rocker Marilyn Manson. Rodriguez is divorced from producer Elizabeth Avellan, with whom he has five children.

A rep for McGowan declined to comment. Calls to Rodriguez’s rep were not immediately returned.

Didn’t they meet and start dating when he was still married? I could be wrong….