It is right to warn others about bad people.
Jenny recognizes her roommates new boyfriend as a guy who was rumored to hit his girlfriend when they were in high school.
Jenny wants to tell her roommate that she knew the guy in high school.
Jenny admits having known of the guy in high school and shares all she heard about him back then.
Jenny decides to acknowledge their past acquaintance but decides not share rumors that she had heard about him.
Jenny is able to give her roommate information to guide her decisions about her relationship.
Jenny is dismayed when her roommate starts showing signs of physical abuse.