Complex sentence: The tomboyish Watts has always considered working-class Keith Nelson her best friend, but when he begins dating the most popular girl in school, Amanda Jones, Watts realizes that she feels something much deeper for him.
Split into simpler sentences: The tomboyish Watts has always considered working-class Keith Nelson her best friend. When he asks out dating the most popular girl in school, Amanda Jones, Watts realizes that she feels something much deeper for him.