Complex sentence: He abhors sex (as a child, he spied on his parents making love, and was both aroused and disgusted by it), is obsessed with the idea of sin, and loathes women as the embodiment of weakness.
Split into simpler sentences: He abhors sex; as a child, he spied on his parents making love, and was both aroused and disgusted by it. He is obsessed with the idea of sin, and loathes women as the embodiment of weakness.