Vol 4: Ch 187 - Preparation for the concert team and chatting with Na
After reading it, Tae is laughing hard because he can imagine his wife's expression and after laughing too much. He kept the notes and her letter to him before putting her phone in their room. Of course, Tae also taking note to ask his wife to retrieve the said CCTV's footages of her when she's writing the letter and this one her research about including the footages of their first fight. He got back to the dorm house and now sleeping without worry since he already knows and aware that his wife really loves him, well he already knows it when she agrees to marry him but being jealous you can sometimes forget your rationality and can't think right anymore, so that's the reason why he left her and to cool down because he doesn't want to regret of what his going to do to her wife just in case he gets controlled by his emotions.