Downey Jr's happy ending in movie

Gothika is a dark thriller, but the movie had a happy ending for actor Robert Downey Jr: He met his fiancee on the set in Montreal.

Susan Levin was a producer on the film, in which Downey co-stars with Halle Berry and Penelope Cruz.

"She's smarter. I like that," the actor said during an interview on The Ellen DeGeneres Show.

"I thought, 'Oh this is great, but she's the producer and I'm working here,"' Downey said.

"But anyway, the point is we got to know each other, we really got to know each other as you tend to on location and not in that 'Gross, you're on location, you're supposed to do something dysfunctional and sleep with the producer' (way). I did that, but it was different."

Downey said he and Levin haven't set a wedding date; in the meantime, they're planning to spend Thanksgiving with her family.

"I'll be going to Palm Springs and I won't be getting arrested while I'm there," he joked, referring to his November 2000 arrest for drug possession at a Palm Springs resort.

A judge dismissed the charges in 2002 after determining that Downey had stayed clean and sober for 14 months.

This will be the second marriage for Downey; he was married for four years to Deborah Falconer, with whom he has a son, Indio.