If describing his onscreen chemistry with Heath Ledger in Brokeback Mountain, Jake Gyllenhaal would say, "For Heath and I, I think it's a friendship and a trust that, as actors, we were going to go someplace that we both were afraid of, and we knew that we were. And we just trusted each other. And I think, in that trust, there was a chemistry and there was a real connection. And just being straight, we didn't have that complication that you usually have when you're working with someone who's a female... He was a great guy, and we were just kind of friends from the beginning, and we both admired what it took to play both the characters we were playing. And we knew, at a certain point, we only had each other. Because we never knew how people were going to respond to the movie, we kind of just joined up and said, "F*ck 'em, let's go for it." And we did. And I think you probably see that. And that's a lot of the chemistry... And at a certain point, it's pretty mundane and pretty cold on a set no matter what you're doing or who you're doing it with."