"I think so," the Chicago Fire actor says when I asked if he feels you can get hitched and spend the rest of your life with just one person. "My grandparents have been together for 50 some odd years. I know a lot of happy marriages."
Why was I questioning Kinney about fidelty and commitment? When I caught up him the other day at the Four Seasons in Beverly Hills, he was promoting The Other Woman, director Nick Cassevetes' new romantic comedy about a Connecticut housewife (the hilarious Leslie Mann) who teams up with two of her husband Mark's mistresses (including a hotshot lawyer played by Cameron Diaz) to seek revenge on her cheating hubby (Game of Thrones' Nikolaj Coster-Waldau).
"If you're in a committed relationship, it's a choice what you do," Kinney said. "Hopefully you don't take the route of Mark and just run amok...I think the idea of taking vows lightly or just marriage in general is a new thing. It's in the statistics; just look at divorce rates. People used to stay unhappy until death do you part, I guess. "
In the film, Kinney plays Mann's brother, who appears to have the hots for Diaz's character.
He admits he was nervous about meeting Diaz for the first time. "I was like, I hope she's cool," Kinney said. "I just wanted to put in some work and have a good outcome. I remember meeting her and she was just so down to earth and receptive. She really is. She came in and it was like playing. I was like a kid in the sandbox. It was loose and it was fun. We just played."
The Other Woman is in theaters on April 25.
For more scoop on the movie, check out E! News tonight at 7 p.m. and 11:30 p.m.