When Ally and Colin jump into the Harbor, she says, "It's fucking cold!" whereas in The House Bunny (2008), an earlier movie starring Anna Faris, her character said "That is fucking hot!" after standing above a man hole cover.
The trivia item below may give away important plot points.
Most of the magazine articles depicted at the beginning of the film are closely related to the events in the plot: "Change too for your man" (Ally constantly changes herself to please others), "Stalking your ex" (the main part of the plot involves Ally contacting old ex-boyfriends), "Does he only want your bod?" (Colin is at first attracted to Ally physically), "Less than perfect: A daughter's story of pleasing her mother" (Ally settling for the wrong guy to make her mother happy), "Be a dude -not- a douche" (the evolution of Colin's character as the plot evolves), "When your sister is just plain better than you" (Daisy is doing better in the relationship front than Ally), "Decorating your bedroom with him in mind" (the one seen the longest, it foreshadows Ally having to accommodate to Colin's presence in her apartment during his hideouts).