So, I guess pre-memory loss!Damhwa was that kind of obsessive and possessive lover whose true feelings were difficult to get a read on for Yugang, so he probably had a lot of doubts whether Damhwa really loved him or not which then led them to that big fight before the accident. In a way, although a bit ironic, this current Damhwa made him able to understand the past Damhwa a bit better
So, I guess pre-memory loss!Damhwa was that kind of obsessive and possessive lover whose true feelings were difficult to get a read on for Yugang, so he probably had a lot of doubts whether Damhwa really loved him or not which then led them to that big fight before the accident. In a way, although a bit ironic, this current Damhwa made him able to understand the past Damhwa a bit better