Prinze Mum on Wedding Date

August 15 -- (ABCNEWS.com) — Freddie Prinze Jr. thinks he's figured out the secret to a successful Hollywood marriage — keeping your mouth shut.

The handsome actor spoke to reporters at the taping for the Teen Choice Awards on Sunday and refused to reveal the date for his impending wedding to Buffy the Vampire Slayer star Sarah Michelle Gellar.

"The reason why Sarah and I work is because we don't talk about that stuff," said Prinze. "We keep it very special just for us."

The pair will keep their professional lives very public, teaming up in the upcoming live-action Scooby-Doo movie. But as for their nuptials, Prinze insists that even the most respected reporter would not get the scoop.

"If I was sitting with Barbara Walters on her best day and she asked, I'm not going to tell her," joked Prinze.

Their fans must appreciate the famous couple's attitude: Gellar was with Prinze at the event and picked up a prize for being a positive role model.

She says the distinction more than makes up for her Vampire Slayer series being overlooked by Emmy Awards voters this year.

"The teens, the audience, this is why we make the show. We don't make it for stodgy old Emmy voters," said Gellar. "That's not what keeps our show alive. It's the fans that keep our show alive. And the fact that we keep winning the fan awards, this is more important to us."

She'll soon find out if the fans will follow her series to another network, when it switches from the WB to UPN in the fall.