Justin Timberlake says he might get married ... in 15 years.

Perhaps his girlfriend will be ready to bear him some children by then.

Indeed, Cameron Diaz doesn't seem any more anxious than her dancing man to settle down and have a family. The couple may be bringing SexyBack, but they won't be taking any children home in the near future.

"I think everybody wants at some point to have that responsibility and involvement. But not at the moment," Diaz, 34, told reporters Sunday while promoting her new movie, The Holiday, in Los Angeles.

Asked if she was worried about the commitment, the actress said: "Yeah, exactly, the commitment! I don't even want a dog. I don't. My cat just died, and I don't want a cat."

Really, Cam? Not even the one owned by Paris Hilton? We fear for its safety if no one steps in.

Meanwhile, Diaz doesn't want any gifts for Christmas. She'll be sponsoring a family for the holidays instead.

Sounds like the beautiful actress would make a great mother in that case. We'd just feel sorry for the kid - because you know other children will be spreading sexy Cameron Diaz pictures around the hallways at school.

And that could be really embarrassing for JT, Jr.