So if you haven't guessed ex is a tip off to extrovert in the title . Get it cause introvert , ex's ?? It's a pun so anyway . Amber is very introverted . And I don't mean likes to read a book instead of part every once and a while I mean border line anxiety disorder ovoid interaction at all cost . One more thing about Amber , she's been dating Evan since high school . Evans an extrovert and I don't mean can carry a conversation I mean go out every night and socialize until the sun comes up . One more thing about Evan , he doesn't like how " docile" Amber is . And at a party one night he kisses someone reaaaally extroverted .