Complex sentence: But E.J. 's world takes a turn for the worse when she catches her fiancee Noah having an affair with her boss Lillah at the office Christmas party, resulting in E.J. breaking Lillah's expensive Gucci pump shoe, and breaking off her engagement with Noah.
Split into simpler sentences: But E.J. 's world takes a turn for the worse when she catches her fiancee Noah having an affair with her boss Lillah at the office Christmas party. Resulting in E.J. breaking Lillah's expensive Gucci pump shoe, and breaking off her engagement with Noah.