Complex sentence: He asks Norah inappropriate questions about her sex life, unnerving her; he also sneaks from his room without telling anyone and shows up at a nearby nightclub where he finds Sherry intoxicated and flirting with other men.
Split into simpler sentences: He asks Norah inappropriate questions about her sex life, unnerving her. He also sneaks from his room without telling anyone and shows up at a nearby nightclub where he finds Sherry intoxicated and flirting with other men.