Molly suggests that she and Mike write their own wedding vows but Mike doesn't want to. He's nervous because Molly was an English Lit major and he can't live up to her expectations. Molly struggles with her vows because she keeps making them too long and complicated. Meanwhile, Mike finds it surprisingly easy after Carl tells him to write vows like he's describing how much he loves lasagna.
Also, despite everyone telling him not to, Harry asks out Victoria to see a concert. To everyone's surprise, she says yes. When Molly makes her realize Harry thinks its a date, Victoria cancels the night.