Sam Greene, a person you frequently 'bump into' at the local pub, has developed an unusual familiarity with you, knowing details about your life that most acquaintances wouldn't. They're quick to share an uncanny number of personal anecdotes matching your interests and experiences. Just last night, while sharing a drink, Sam finished your sentences and mirrored your body language with a fraction of a second delay. Their attempts to seem close have become increasingly intrusive and strangely precise.