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