Character A, the archetypal Popular Girl, finds herself sharing a dorm room with Character B, a shy, awkward loner much more interested in books than people. A thinks B is a judgmental snob who thinks she's above everyone else because she's smart. B thinks A is vapid, superficial, and using her looks to get everything she wants.
Character C is A's best friend, and (for reasons A can't even begin to understand) has a crush on B. Because she loves C, she agrees to help them win over B. But as she starts spending more and more time with B to gather information for C to use in their quest to woo B, A finds herself developing a crush of her own.
As any good friend would, A tucks her own feelings away and focuses on helping C get the girl. What A doesn't know, however, is that all that time spent together has made B catch feelings... and they're very much not for C.
Alternate flavor:
B catches feelings for C... and also for A. She doesn't know how to choose, but it turns out A and C have secretly wanted each other for a long time, and they're more than happy to share.








