Suggest me a book where a femme fatale character falls in love

I’m looking for any book recommendations where a femme fatale character falls in love with the main character of the story. I realize that this isn’t very common in comparison to other stories with femme fatales but I’m interested. I like the idea of a femme fatale falling genuinely in love. It can be an older book or a modern one as long as it has a femme fatale character who falls in love with the main character.

by KingE2099