The story is just missing something. It felt chaotic rather than warm, sweet and melancholic like its supposed to. Both of them are adults so I don't mind their relationship but it does feel half baked when the reason why MMC liked the FMC in the first place was because she reminded him of his late wife. In the end he came to like her as a person but his feelings started when he felt he had a substitute for his late wife. Adult relationships are complex but I just wish the author showed it with more depth rather than making it so careless.