Cameron Diaz doesn't believe in monogamy. She's been in a lot of relationships, but has never been married, nor does she plan to be.

"I don't know if anyone is really naturally monogamous," she said. "We all have the same instincts as animals. But we live in a society where it's been ingrained in us to do these things."

Cameron dishes about her views on relationships in the new issue of In Style, which hits newsstands on Friday.

Forgive me, Ms. Diaz, for thinking that we humans are a wee bit more advanced and evolved than jungle animals, but I do believe it's possible for two people to commit to one another for a lifetime. What are your thoughts on this?