The Difference in Our Lives

Winter is a teenage girl who is insanely involved in academics. She isn't the most popular girl, and nobody really pays attention to her. She has issues with her parents, and she has a strange sense of humor. She isn't the best looking, and her sense of style is questionable. To say the least, she was a unique girl.
Summer is a teenage girl who is the complete opposite. She's popular, everyone pays attention to her, and her relationship with her parents is amazing. Her sense of humor is common but interpreted in a different way than most. She's gorgeous, and her sense of style IS the new trend. To say the least, she was someone that everyone wanted to be around.
The thing is, Winter and Summer are best friends. Up until junior year.