It appears Lauren Graham and Peter Krause have taken the notion of brotherly/sisterly love quite seriously as both actors, who star as brother and sister on NBC’s Parenthood, have started dating, according to US Weekly.

Hot Stuff [US Weekly] has learned Lauren Graham, 43, and Peter Krause, 44 - who play siblings on NBC’s Parenthood - are dating. Says an eyewitness who saw the duo on an April 10 dinner date at Charlie Palmer: Dry Creek Kitchen in Healdsburg, California: “They were having a great time and seemed really happy!

Good for them! They make a great couple. Another reason for the couple to be happy…NBC has renewed Parenthood for a second season.

Even though the pair play brother and sister on the show, their real life romance doesn’t creep me out as much as the on-screen brother/sister pair of Dexter Morgan (Michael C. Hall) and Debra Morgan (Jennifer Carpenter) from Showtime’s Dexter, who are married off screen. Now why is that?