Marked by Succubus Villain

My sister coaxed me into proposing to my childhood sweetheart, whom I've been in a long-term relationship with for three years. The comments immediately flooded the screen: "Second female lead, don't propose to him! Your childhood sweetheart has been with your sister for a while now. They were just in the makeup room, passionately kissing. Your sister's the one pushing you to propose to make you embarrass yourself in public." "Look at our handsome, charming succubus villain, Julian. His eyes are practically red with jealousy. Power and money are the real marriage supplements, they're the big ones!" "The succubus villain is truly the strongest character in this book. As soon as you say something nice to him, the male lead with his jealous tendencies and the naïve female lead are nothing compared to him." "Am I the only one who wants to see the second female lead propose to her childhood sweetheart? After all, after the proposal, the villain will take her to the basement and sleep her for four days and nights. She almost lost control, exciting." "If she don't propose, won't she avoid getting forced?" "Do whatever, but maybe he'll be... a little gentler, well." I froze and looked at Julian Blackwood, whom I had never given a kind face to. He was my ex-boyfriend. I broke up with him when he loved me the most. The reason? You're just too bad at bed, you can't satisfy me.