What is the possible relationship between the two speakers?

M: Hello, Meimei.
W: Hi, Frank.
M: You don’t look very well. Do you feel sick?
W: No. But I have bad news.
M: Really? What is it?
W: I failed the maths exam.
M: You are very good at maths. How is that?
W: I spent a lot of time watching TV and playing computer games.
M: Oh, that’s too bad. Now you must be very upset.
W: Yes, I am.
M: I’m sorry to hear that. But don’t worry too much. I don’t think your teacher will think little of you because of that. Spend more time on maths and you’ll get better scores.
W: Yes. Thank you.