Explanation:
Insecure. One major thing that cheating can say about a person is the fact that they are very insecure if they are unfaithful outside of their main relationship. Insecurity can mean that they seek a confidence boost and bolstering of their ego by feeling attractive to other people.
Characterization - Montresor explains how he has acted toward his enemy
Montag gets on the subway and starts reading the Bible, because he wants to memorize some lines from it. However, he is being constantly distracted and interrupted by an advertisement for Denham's Dentrifice toothpaste, as its jingle is played over and over again on the subway. He gets really mad because of it and starts screaming and yelling, before he leaves at the next stop.