What’ s the possible relationship between the two speakers?

W: You said your favorite dish is fish, right? Let me help you to have some more fish.
M: The fish is delicious. But I’ ve had enough now. I’ d like to have some soup.
W: Here it is. Help yourself.
M: Thanks. I didn’ t know you were so good at cooking. If my wife were here, she would be as surprised as I am, and she would ask you to teach her the tips.
W: Well, thank you for such praises. Bring your wife too if you come here next time. 1 haven’t seen her for quite a while. We’ 11 have a lot to catch up.
M: Sure, I will. My wife will be very happy to see you, too. Well, I’ m full now. Thank you for your wonderful meal.
W: I’m glad you enjoyed it.