There's some budding romance between her and a fellow jock which her and her friend (another stereotypical popular girl) start to do a battle over. Who will get the boy, will it be Alison or her aquantance. This girl who she is aquantaned with is/ was her best friend who I quote from the movie always takes what's her e.g being prom queen. Maybe even Alison is the side chick, follower or shadow in the background