Quote from Marshall in Slap Bet
Marshall: Hey. Listen, dude, I gotta talk to you, but you gotta promise me that you won't tell Barney. Ted: Fine, I won't tell Barney. What is it? Marshall: Robin's not married. Ted: What? Then, why would she tell me she was? Marshall: I don't know but I cross-checked every record in Canada. There's no record of her ever being married. Ted: There must be some mistake. Marshall: I promise you, she's not married. She's not great at parking legally either.