Answer:
Anne, because she is always trying to pet his cat and writing in her journal.
Explanation:
Since Anne is always trying to hurt the cat and always writing in her diary, Peter thinks she is a friendly and sensitive person who will understand his feelings about everything that is happening. He sees Anne as a person he can talk to and express himself with, so he thinks she is trustworthy and willing to be the same kind of trusted company for her.
Topic sentence. That's just restating your thesis.
