She lied to you. Divorce her now!!!
Mets fans I would say are more passionate only because they are not used to winning, so when the team is good they are riled up. Yankees fans were definitely more aggressive before, but now the new Yankee Stadium has priced out all the true baseball fans and all you have are corporate suits sitting in the lower levels who are uppity and most of the time not really in to the game. With the exception of 1 all of my friends and family are Yankee fans and they wholeheartedly agree with this, they've told me going to a yankee game is just not the same any more.