Adam Brody Rates Rachel Bilson and Olivia Wilde’s Kissing on The O.C.

Adam Brody, Olivia Wilde and Rachel Bilson
Adam Brody compared Rachel Bilson and Olivia Wilde's kissing on The O.C. during "Plead the Fifth" on Watch What Happens Live July 30 Donato Sardella/WireImage; Jason LaVeris/FilmMagic

Adam Brody is picking favorites! The 33-year-old former O.C. star appeared on Bravo's Watch What Happens Live Tuesday, July 30, and played a special O.C. edition of host Andy Cohen's game "Plead the Fifth."

"Who is the better kisser: Rachel Bilson or Olivia Wilde?" Cohen asked the actor of his former female love interests. (Brody starred as the funny and lovable Seth Cohen, Bilson as the beautiful Summer Roberts and Wilde as bad girl Alex Kelly on the Fox teen drama series, which aired from 2003 to 2007. During the series, Seth had a long-term relationship with Summer and a brief fling with Alex, who later revealed she is bisexual.)

"I was dating Rachel at the time, so there were less barriers," Brody explained. "So Rachel."

Rachel Bilson and Adam Brody
Adam Brody as Seth wearing Spider-man mask and hanging upside down, kissing Rachel Bilson as Summer. Justin Lubin/Warner Bros./Getty Images

Brody and Bilson, 31, dated for three years before calling it quits in December 2006. Bilson has been in an on-again, off-again relationship with Hayden Christensen since 2007, and Wilde, 29, got engaged to former Saturday Night Live star Jason Sudeikis in January 2013. Brody, meanwhile, has been dating Gossip Girl actress Leighton Meester for the past five months. (Gossip Girl and The O.C. were both created by Josh Schwartz.)

Olivia Wilde and Adam Brody
Olivia Wilde as Alex and Adam Brody as Seth. Darren Michaels/Warner Bros./Getty Images

During the show, the Lovelace actor was also asked by Cohen: "Who is the bigger MILF: Julie Cooper [Kelly Rowan] or Kirsten Cohen [Melinda Clarke]?"

"Julie, only because she relishes it," he said of Clarke's character, who was the mother of Marissa Cooper, played by Mischa Barton.

"On a scale of one to ten, ten being the most, how big of a bitch was Mischa Barton behind the scenes of The O.C.?" Cohen inquired. "A two. A one," Brody answered nicely. "Yes."

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