How many damn times does this happen? Along with The Graduate, there's Spaceballs, The Wedding Singer, Shrek, Made Of Honor, Wedding Crashers, and Wayne's World spoofing the trope itself. I'm sure there are other fictional wedding examples popping into your head right now -- all of which are being crashed exclusively by men. Because women are apparently so goddamn wishy-washy that they're looking for an upgrade right until the vows are done.
Even The Wedding Planner, a film about a woman pursuing an engaged man, somehow manages to end with that man trying to stop her wedding. It's like somewhere a room full of executives decided that wasting a bunch of catering food was the most romantic thing for a guy to do ... especially since every man is a child-like jerkoff in desperate need of a woman's touch.
He's basically that face-changing assassin from Game Of Thrones.
Don't get me wrong, Judd Apatow (who might be reading this); I love movies like The 40-Year-Old Virgin and Superbad like they were my own balls. But somewhere down the line this genre decided that for men to grow as characters, they also have to abandon their own friends and hobbies. Steve Carell has to sell off his action figure collection, Seth Rogen has to stop hanging out with his stoner friends, and even Superbad ends with the two sets of friends splitting apart to pursue the opposite sex.