After Our Flash Marriage, I Overhear CEO Lu, a Love-Struck Fool, Crawling in the Shadows

[Green Tea Heroine x Tsundere, Sharp-Tongued Hero; one-on-one, both virgins; he has a secret crush on her; love rivals galore.] Song You entered into a fake marriage agreement with Lu Fei for money, planning to go their separate ways as soon as they'd fulfilled their deal. But one day, when she accidentally touched someone else's hand, she suddenly heard a voice: [How dare he touch her with that filthy hand?] Song You: "...?" She thought she'd imagined it, but she kept hearing Lu Fei's inner thoughts, and they grew stranger by the day: [Her lips look so soft. I want to kiss her.] [Why is she smiling at someone else? I'm her husband, damn it. I want to lock her up so she can only look at me.] [If only she were stepping on me instead of the floor.] [...] Song You: ...Where did this psycho come from? Later, when their agreement ended, she asked him for a divorce. He acted nonchalant. "A divorce? Sure." Summoning her courage, Song You touched him. She heard him thinking dark, frantic thoughts: [If she takes one more step away, I'll lock her up so she can look at me and me alone forever.] "..." Help! He's a lunatic!