Answer: The contrasts are that Anne is very outgoing and asking a lot of questions while Peter seems like he doesn't want to talk to her and he doesn't like to hangout with his friends when he was in school. He is an overall shy and awkward person while Anne is adventurous and wanting to do things. The author wanted to show these differences because it kind of reveals that they don't really fit each other's personality very well and they can't really relate to a lot of things.
