I really like this book! A combination of a body double and a wife-chasing crematorium.
Male stand-in! The heroine and the male lead were childhood sweethearts, but that may be because they feel confident in being favored, and he regards you more as his private property, rather than as a human being. He must not have caught up with him in the crematorium later (the two are very separated, one reason is a misunderstanding, which even led to the heroine having some mental illness, which is equivalent to the straw that broke the camel's back)
I would recommend this book to be read by a female protagonist who abuses men.
Not only did the male protagonist fall in love at first sight, he broke up with him and asked for a reconciliation.