Mary-Kate and Ashley Olsen Talk Dating on Oprah

If you want to date one of the Olsen twins, you'd best date both of them. The girls told The Oprah Winfrey Show that they have a say in each other's relationships - to an extent.

"I just support her. If she doesn't like him, I won't like him. If she likes him, I'll like him," said Mary-Kate Olsen.

Mary-Kate admits that she is "not in a relationship," but says she "can put in my two cents, but I think, you know, whatever makes her happy. It's her life."

One thing is for certain: Justin Bartha must have impressed Ashley. Mary-Kate was spotted cozying up with Bartha during an intimate dinner in Los Angeles.

For the twins, it comes down to mutual respect. No matter what their decisions are, "We respect each other's decisions," said Ashley, who added that this isn't new news.