Both made a delicious dinner and ate together. After dinner;
Bella: Go and take rest. You must be tired.
Aina: Really? You think I might be tired right?
Bella: yes, of course. You studied half of the book.
Aina: and I believe you must be double tired than me.
Bella: how?
Aina: you taught me with so much hard work. I just heard you and understand the concepts.
Bella: and after that you did the whole exercises.
Aina: by the way, you are a very good teacher.
Bella: really?
Aina: yes, I never understood these questions my whole life. But you taught me and I got the concept immediately.
Bella: I never taught anybody before. I never knew that I'm a good teacher. Thank you for your kind information. Hahahahah
Aina also laughed.
Aina: oh, I forgot to tell you that you must be double tired because of standing outside the apartment.
Bella: you, you never leave a chance to tease me.
Aina: hehehe
Bella: stop your hehehe and sleep now.
Aina: ok, goodnight.