Debra Messing may be hooking up with her "Smash" co-star Will Chase, but she's hardly the only TV star to find love on set. Back in 2003, sparks flew for co-stars Rachel Bilson and Adam Brody on the set of "The OC," and who could ever forget Joanie (Erin Moran) and Chachi's (Scott Baio) real-life romance that was worthy of a spin-off?
Plus, only in the world of TV is it ever acceptable to fall in love with your small-screen brother. Just ask Katherine Heigl, who dated her "Roswell" on-screen sibling Jason Behr in 2000. Meanwhile, Lauren Graham and her current boyfriend Peter Krause, who plays her TV brother Adam Braverman on "Parenthood," have been spotted vacationing in Venice together.
