
I really didn't expect this plot twist of there being two car accidents. I was confused on why he said he lost his memories on an accident but then when we saw him recover he seemed to still clearly remember a lot of things. He lost his memories from his suicide attempt (second "accident") when he drove his car off the rails, which is why he didn't immediately recognize Ha kyung. He truly was in love with him and was so devastated when he was told that Hakyung died. Probably survival guilt as well...