A: Lingling, you look unhappy. What's up?

B: Dad. I have a problem with my best friend.

A: 

B: We've been friends for five years. We went to different schools last term. And she came to study at my school this term. I was very happy at first.

A: Can you tell me how she's different?

B: She doesn't like me to see my other friends.

A: 

B: Yes, I have. But she refused to listen.

A: 

B: No. I don't know.

A: Maybe she doesn't feel sure of herself.

B: Maybe. What shall I do then? 

A: You can introduce her to your other friends and encourage her to join in more.

B: I see. Thanks, Dad.

A. Do you know why she treats you like that?

B. Have you mentioned this to her?

C. What's happened?

D. Or she probably feels lonely without you.

E. But she's so different.