Alyssa Milano has denied dating Justin Theroux before he was in a relationship with Jennifer Aniston.

After Entertainment Weekly listed the Charmed star and the Wanderlust actor as one of their surprising celebrity hookups, Alyssa was quick to shoot the claim down.

"Completely false. We were co-workers & great friends but never dated," she wrote on her Twitter.

The pair met on the set of 1997 thriller Below Utopia, where their roles as an on-screen couple were rumored to have led to a real-life romance. However Alyssa has clarified that he was in fact involved with her friend, Kathryne Dora Brown, while they played lovers on camera. "He dated my best friend at the time. I love that guy," she clarified.

Alyssa and her husband David Bugliari welcomed baby Milo on August 31, 2011. Meanwhile Justin, 40, and Jennifer, 43, share a home together in Los Angeles.

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