Responses
It wasn't a bet. Either it's the translation or Joon was being petty. He could be referring to when he caught Yoonseul talking to his friend about "being nice" to him. Sometimes when you're feeling petty, you remember things in a very negative way although the other person has already apologised/fixed it
Gotchu thnks XD
What did he mean "is this a bet 'again' "
When was the 1st time, did I forget something or was the translation a lil weird