Complex sentence: He seduces her, and although he is married, he embarks on an affair with her, promising to leave his wife for her but insists he can't leave his wife just yet because she suffers from bulimia; something Molly's friend Rona finds very skeptical.
Split into simpler sentences: He seduces her, and although he is married, he embarks on an affair with her, promising to leave his wife for her. And insists he can't leave her because she suffers from bulimia; something her friend Rona finds very skeptical.