next guest, megastar robert pattinson, who stars in the new psychological thriller, "cosmopolis." Robert, welcome to "gma." It's your first time here. Yeah. It's like a nightclub. That's what they... See More
next guest, megastar robert pattinson, who stars in the new psychological thriller, "cosmopolis." Robert, welcome to "gma." It's your first time here. Yeah. It's like a nightclub. That's what they tell us a lot, actually. They've been rolling out the red carpet for you here in new york. Jon stewart gave you some ice cream. We did our research. We thought more appropriate for breakfast, your favorite cereal, cinnamon toast crunch. I was reading the nutritional facts. Only 30 calories. Dig in. Go for it. I'm going to take the whole box. You know, your performance in "cosmopolis" is just gripping. It's a fascinating performance. I have to get the elephant in the room out of the way. Everyone wants to know how are you doing? And what do you want your fans to know what's going on in your personal life? I mean, you know, they seem pretty excited about whatever. I mean, you can kind of -- i like my fans to know that cinnamon toast crunch has 30 calories a bowl, for instance. Pretty much everything coming out of my mouth is irrelevant. You know people are going to read things into it. And I guess, I take it you don't want to talk too much about it. Is that the way you handle all of this craziness? By just trying to put a -- it's a different thing. You get into it to do movies. I've never been interested in trying to sell my personal life. And that's really the only reason people bring it up. So, you know, the reason why you go on tv, to promote movies. That's kind of -- you know, that's the only way to do it. Is there any way to get you -- you start getting used to it, it means you're getting crazy. It's nice. Crazy, being on the craziest theme park ride you've been on. It's totally exciting. But eventually, you have to have a break. You seem to be doing okay. Yeah. You know, there's one person I met this week who was completely unfazed by your celebrity, your co-star, paul giamatti. When we were shooting, there weren't all these girls around. I get more girls. Who cares? He really get more girls than you? He does. You go to brooklyn heights, and paul giamatti is, like -- you have an amazing scene with him in "cosmopolis," the last 20 minutes of the movie. You play a 20-year-old master of the universe, eric packard, who is losing it. What drew you to this role? I drew this connection to find it difficult to live in the present. It's funny. It exacerbates it being an actor. You have to focus on it. Trying to exist in a contemporary way. I feel like I'm kind of living in the future. As soon as I was reading that, that's a lot of about what eric packer's problem is. He feels like he's living in the future. And he's living inside his head so much. Yeah. And he's not really able to totally feel. And what's funny, a lot of similarities to an actor's life, which is -- I would think so. He's in this bubble. Most of it in this limo, including wild sex scenes in the limbo. One was julia binoche. And right after the sex, she asked you about your wife. How many billions together do you two represent? She's a poet. Is that what she is? I thought she was a schifrin. A little of both. So, rich and priss. Does she let you touch her personal parts? You look gorgeous today. Seeing that again thisime around. You said something fascinating to "time" magazine. You said the world would be a much better place in all of the billionaires and bankers were What did you mean by that? That was yesterday. Yeah. I think it's true. If, you know -- the weird thing is, I can't really tell what's interesting about actors, either. Oh, all of them can. People don't find their lives -- the personal lives of people, much, much more power than any celebrity would have. I they if you put the lives of people who control billions of dollars on the front page of every, single paper, the world would be a better place. It's like, you know, the spin culture. If you take away -- if you took away publicists and things and people spoke to themselves, then they would have to be responsible for their words. You don't have a publicist, do you? I don't. But I do have a manager who, de facto publicist. But he doesn't like being referred to as a publicist. I like being -- he gives great advice. So, I can disregard it. Good for you. You're fantastic. The movie is fantastic. "Cosmopolis" comes out this friday in new york and los angeles. AND IS IN THEATERS NATIONWIDE ON AUGUST 24th. Thanks a lot.
This transcript has been automatically generated and may not be 100% accurate.