The actor ties the knot just a month before his television character does

It’s all about weddings for Owain Yeoman these days!

The Mentalist star tells PEOPLE he tied the knot with his fiancée, jewelry designer Gigi Yallouz, on Sept. 7 at a private estate in Malibu, Calif.

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But wait, there’s more.

The Welsh actor will say ‘I do’ again on the CBS drama’s Oct. 13 episode when his character, Wayne Rigsby, weds his colleague Grace Van Pelt (Amanda Righetti).

“There I was with Gigi on one side and Amanda on the other,” says Yeoman, 35, laughing about taking part in “two weddings in the span of two weeks.”

Yeoman s French bulldog, Cash, collaborated with his master’s engagement to Yallouz last October. He also walked his best friend down the aisle at the outdoor wedding ceremony, attended by about 100 guests.

“I was completely upstaged,” jokes Yeoman, adding that Cash did have to stay home while the couple honeymooned in Bora Bora.

On a more serious note, Yeoman tells PEOPLE he’s just happy to finally be a married man.