Complex sentence: This results in Roger hitting on Hayley, and later Francine, complimenting and flattering both of them until they eventually become insanely jealous of each other, which escalates until they start fighting.
Split into simpler sentences: This results in Roger hitting on Hayley, and later Francine. As he continues to compliment and flatter both of them, they eventually become jealous of each other, which escalates until they start fighting.