Lauren Graham Dating Peter Krause -- Her On-Screen Brother

Lauren Graham has kept her dating relationship with her Parenthood co-star (and on-screen brother) Peter Krause a well-kept secret — until now!

Here’s what the 42-year-old actress (in a magenta bodycon dress by Reiss) shared in the October 2010 issue of Redbook:

On transitioning from costars to lovers: “One of the things that’s been so fun is that it’s so easy. It’s a lot, to work with somebody and spend time with them, too.”

On meeting each other fifteen years ago: “I think we liked each other [but] he asked me over to his house to play a board game - and that’s exactly what we ended up doing. So I was like, ‘This guy doesn’t like me. Who actually plays a board game?’… The timing wasn’t right. I don’t think either of us was ready.”

On keeping their relationship under wraps at first: “Nobody knew about it for awhile, because we like to be at home, cooking and not going out. I’ve also been really protective of it, because it’s important that you can buy us as brother and sister on the show.”

Re: Lauren Graham Dating Peter Krause -- Her On-Screen Brother

I love the both of them. I also really like that show. I am happy for them.

Re: Lauren Graham Dating Peter Krause -- Her On-Screen Brother

I heard about this months ago! I think it was on this board!