My mom and I are trying to figure out what movie this is from: the trailer starts with a heavy rock band and another part of the trailer shows a guy and a girl sitting on a bench and when the guy tries to brush the girls hair out of her face she knocks her hat off. Also my mom remembers someone having a name that sounds like bug and a heavy guy with really curly hair. PLEASE HELP (And if it helps: my mom says the girl on the bench reminds her of Demi Lovato but I checked her list of movies and we couldn't find this one)
May it be "The Rocker" (2008). It is a comedy about a Rock band.
The main character is nicknamed "Fish"
One of the protagonists fits that description