Even Charlize Theron can’t believe she’s dating Sean Penn . When the actors were outed as a couple after New Year’s in 2014, skeptics wondered what Theron and Penn had in common. As it turns out, the actors are compatible in ways Theron herself hadn’t realized. Theron explains, “We’ve been friends for 20 years. He was married, I was in a long-term relationship, our spouses—not regularly, but we were in each other’s lives. I think our friendship stemmed from mutual respect—more on my end, because I really didn’t have a body of work 20 years ago, but my love and passion for making films—that was our common ground,”