I Already Have His Love, You Can Never Steal It Again

Do You Have Any Childhood Sweethearts Who Were a Little Bit Abusive in the Middle but Ended up Being He?

The Male and Female Protagonists Love Each Other but Have Misunderstandings, and It Is a Sadistic Story.

I want to read a book similar to "Seduction". The female protagonist loves the male protagonist very much but thinks that the male protagonist has someone else in his heart. The male protagonist also loves the female protagonist very much, but thinks that the female protagonist likes the second male lead.