Complex sentence: The two became close, but Andy's good friend Lauren Fenmore was suspicious of Farren, who eventually confided in Andy that she had severe amnesia and could not remember anything about her past or true identity.
Split into simpler sentences: The two became close, but Andy's good friend Lauren Fenmore was suspicious of Farren. Farren eventually confided in Andy that she had severe amnesia and could not remember anything about her past or true identity.