May 12, 2010 — -- Ashton Kutcher said he does not try to make sense of the death last December of his ex-girlfriend, actress Brittany Murphy, of pneumonia at age 32.
"I don't think you can, I don't know if you try to make sense of it or not," Kutcher told "Nightline" co-anchor Cynthia McFadden in an exclusive interview.
In a wide-ranging interview with McFadden, Kutcher, 32, talked about everything from the changing media to his personal chef to the chances that he'll have children with his wife, Demi Moore. He even talked about the gun he keeps under his bed.
Watch Cynthia McFadden's full interview with Ashton Kutcher on "Nightline" this Thursday, May 13 at 11:35 p.m. ET
"I just celebrate who [Murphy] was," Kutcher said. "She was like the person who walked in the room and she was always the first person to dance. You know when you go to a party and everybody is standing around, and the music is going -- and you know sooner or later everyone is going to dance. She was always the first person to dance. And I just try to connect to that and celebrate who she was and how she was, and not make sense of it, 'cause there is no sense of making sense of it."
Kutcher said that he had not been in close touch with Murphy, his co-star on "Just Married," before her death.
"Not really," Kutcher said. "I mean she came in ... We were casting a TV show that we were producing, and I wanted her to play this role in it, and she came in and I got to see her probably about two months before she passed away."
Kutcher tried something new to promote his latest film, "Killers," in which he plays a super spy who falls for a small-town girl.
Kutcher conceived what he calls "a social game" playing out on Chat Roulette, the Web site that randomly pairs strangers around the world for video chats. He uploaded to the site a looping video of himself loading a gun and then pointing it right at the screen.
"As soon as you see a gun and a bullet, you have to stop and watch," said Kutcher. "'What the hell is gonna happen,' right? ... It's loaded, I was a little worried I'd actually shoot my screen. I don't have dummy bullets at home."
A graphic at the end of the video simulates gunfire. "And then," Kutcher explained, "when the gun goes off, 'Killers, June 4th' pops on the screen."
McFadden asked Kutcher about the gun.
"It's my gun from under my bed," he said.
He keeps a gun under his bed?
"You have to have a gun under your bed," Kutcher said. "...I don't have security."