David Duchovny leads an all-star cast comprising of Julianne Moore, Maggie Gyllenhaal, Billy Crudup in Bart Freundlich's romantic comedy, "Trust the Man," which opens in theaters today. Freundlich directs his wife Julianne opposite David, who plays a sex-addict husband who can't seem to get his wife (Moore) to satisfy his needs. Meanwhile, her carefree younger brother (Crudup) has trouble committing to his longtime girlfriend (Gyllenhaal). These two couples find themselves in the crossroads of their relationships as they look forward to the future and what lies ahead.

Below, David talks about working on "Trust the Man."

Q: So how are you picking projects these days?

DAVID: I just have an instinctual kind of thing, a gut reaction to things. I gave up long ago trying to have any kind of conscious control of what it is I'm doing or trying to figure out a career or some kind of path. I realized at one point that the more I know, the less I know.

Q: What was it about this particular film?

DAVID: This one I was in on early from when Bart was writing it. Because he had said, "I want to write a comedy with you in it." And I said, "Sure." We, friends of Bart, had always wanted him to do a comedy so he finally listened and he wrote this. So I read the first draft and I was in immediately.

Q: Was it awkward having intimate scenes with Julianne Moore being that her husband was directing?

DAVID: Yeah, we're both pros but you never know. It's always hard to know what is going to look right on camera because there is no love scene. We're not naked but we do kiss, and kiss intimately as lovers would kiss in the movie. So it's not really a negotiation, but it's a discussion that you have before, like if you and I were going to do it, the we say how much tongue we're going to use. Its really about the tongue. Really. Because you don't want it to seem like you're not kissing that way because its a movie. That's worse than having it look ugly because you are using your tongues. Because nothing will take you more out of a movie than seeing saliva joining two people. So there is a little bit of how much we open our mouths.

Q: Whose idea was it for Tom to have this porn fascination?

DAVID: Oh, That's Bart.

Q: Fox Mulder also had a fascination with porn.

DAVID: Oh Mulder had a porn thing. I had forgotten about that.

Q: You had a lot of roles that had a sexual inclination. In "Julia Has Two Lovers" you played a guy into phone sex. Not to mention, your role in the "Red Shoe Diaries" series. In this movie, you're into sex and watching porn on the Net. Why is it you play these roles?

DAVID: It's instinctually. You are making me remember. I'm going to fail a test of my own work. I don't now. I think I get that and I think I can play it. I don't know, maybe somebody might be more uncomfortable playing the truth of that. I really loved that scene in this movie. Aside from being kind of twisted and really funny, I thought it was also true because it was guy. If you get out of the mind set of, "Oh my God its porn, its sex, shocking, scandalous, funny, whatever." It's really a guy trying to connect with his wife, trying to find new ways to tell his wife what he needs. I just thought it was kind of wonderfully sad and yearning underneath this very funny and really original scene.

You know when we were at the Toronto Film Festival, after the screening, somebody goes "Thank you for making a traditional romantic comedy. Do you think that this is a traditional romantic comedy?" And I said, "Well if you're definition of a traditional romantic comedy is one in which a husband tries to get his wife to narrate a porn scene while he lies next to her masturbating in bed, than yes than it's a traditional romantic comedy." So many of the other movies out now which are really laugh-oriented first and relationship-oriented second, the third act of most of these movies are so bad, because all of a sudden I'm supposed to have sentiment, now that I'm supposed to feel something for these people. I feel like Bart's movie actually does kind of hold those two things together. That scene stands for me as one of the most successful moments of what could be called, gross, or modern, edgy comedy with the reality of a relationship underneath it.

Q: What is the secret to a good marriage and relationship?

DAVID: It's probably one person usually having the balls to say what you want. That's what I like about this character. He's in a relationship in trouble, yet he's actually saying, " I need more." It's rare in movies or even in life where somebody owns up to their needs. I guess in a relationship, it's the only way it has a chance to survive. If somebody says what they want or what they need, it gives the person the chance to say yes or no, instead of suffering in silence or depravation or whatever it is you could be in without saying anything. I've never articulated that before, I don't know if it made sense or even if I believe it, but that's what came out of my mouth.

Q: What do you think makes a successful relationship comedy?

DAVID: I think in this day and age, without overselling the movie, I really do believe that this is more modern in the sense of like the motive of "The Wedding Crashers" which are like hard on comedies, all of a sudden are very popular, yet underneath there is this old fashioned kind of whimsical, almost Woody Allen-ish, "Annie Hall" that we aspire to. It's kind of ambitious in the way what Bart's done, but on the other hand it's a movie that you are supposed to have a good time with. It's not trying to be anything more than that.

Q: Are you going to write a comedy soon?

DAVID: I have a couple.

Q: What are you going to do with them?

DAVID: When I stop acting so much then I'll get to them.

Q: Are you going to act in it? Your wife should be in one too.

DAVID: Yes. My wife should be in any comedy. Yeah that's true. I wish that I could write a movie that could service her talents. It's one of the things that I would love to be able to do. I don't know if I have that in me. But I have a comedy that I wrote that I want to act in and not direct, and one I want to direct in and not act in. And one I want to do just craft services on. I don't know.

Q: Do you and your wife like working together?

DAVID: I like working together. It was fun. But acting together, she has said, and I will say what she says, even though again I'm not sure if I believe it, but it makes sense to me kind of. She says I never want to look at you and know that you're lying, which is what you do when you are acting. She is putting the relationship in front of this weird situation where we would be acting together. But having said that, if we come across this thing that was amazing, which had two roles we loved for a man and a woman, I'm sure we would give it a try.

Q: Is there another "X-Files" movie on the horizon?

DAVID: It's always on the horizon. I'm still very much in touch with Chris Carter and Gillian [Anderson]. Both Gillian and I are positive about it. It's not like we're running from it. It's just a matter of there are some legal things that need to be resolved over at Fox.

Q: Is there a script?

DAVID: I have not seen a script, but there is an idea.

Q: Where do you see your character going?

DAVID: Oh, where does he go? I mean, you know, he's there. Well the first one he'd come back, so he wouldn't go anywhere. He'd actually come back. If we had in mind some sort of serialization in the movies for this character, I think this second one, after three or four years the show has been off, I think you would have to reestablish the character rather than change him. You would really have to reestablish who this guy is first for people who haven't seen it.

"Trust the Man" opens in limited release August 18th.