Complex sentence: A love Triangle ensues as Hillary and John are instantly attracted to one another leaving CC in the cold and resentment toward her best friend, making matters worse when Hillary and John finally sleep together on CC's opening night performance of CC's first lead off broadway.
Split into simpler sentences: A love triangle ensues as Hillary and John are instantly attracted to one another leaving CC in the cold and feeling resentment toward her best friend. Matters are made worse when Hillary and John finally sleep together on CC's opening-night performance of CC's first lead off broadway.