Hidden Tiki-Taka and Honest Letters in Transfer Roommates

As the members read through X's letters written by themselves, they open up to each other about their innermost feelings.

You did a great job with this parody of 'switching partners'.

You said if you hadn't wanted to come, I wouldn't have come either.

Isn't this a famous line from the movie Rebound Love?

It was funny how they kept laughing while doing it, probably because they found it amusing too, and it was also funny to see them unable to hold back their laughter.