Even If You Don't Love, I Will Love

The first day I saw that boy, I fell in love with him. That boy was my sister's boyfriend. My sister didn't like him and broke up with him. The girl and the boy are together. The boy discovered that he deeply loved the girl's sister. The girl was very sad and told the boy, "I will always love you", thus unfolding a tragic love story. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.