beta
Chapter 42 is my favorite in the second season because that chapter really emphasized that he knew. I think when he said I missed you in chapter 42, it means that my memory returned, and I really, really missed you. The way he held on longer on that embrace than even Hakyung find it weird.
Seeing him in the rain holding an umbrella, saying 'I miss you' is such a subtle message. He clearly remembers, but because of the contract that he made, that's the only way he could show his old emotions returning without saying anything that will get Hakyung suspicious. The man really loves Hakyung and accepts him and is not mad at him for pretending.