What Genre Is 'I Slept My Sister'S Fiancee' Classified As?

“Give me one reason, Liv.” He stalked toward me, cornering me against the edge of the desk. “One good reason why I shouldn’t bend you over this desk and f*ck you senseless.” My breath caught. “This is wrong, Damon. So wrong.” I pressed my palms flat against his chest, trying to create space. “You’re my brother-in-law…” “Not yet, love,” he whispered, fingers curling around my waist possessively. “You’re still engaged to him, but the man you’ll be getting married to…” Two fingers slipped into my heat, making me gasp. “…is me.” I should’ve walked away. I should’ve resisted. But I couldn't forget what it felt like to be his. * Olivia have the perfect life. The perfect fiancé. Marcus is everything she thought she wanted—sweet, charming, dependable. Safe. She thought she have it all figured out... Until the night of her engagement party, when she comes face-to-face with Damon—her ex. The man who had broken, damaged and left her for ruin, three years ago. The man she’s about to call brother-in-law. Now, old wounds rip open. Feelings she thought she buried, clawed their way back to the surface. And the man she once loved? He isn’t asking this time. Damon wants her back. And he’ll burn every bridge, including the one with his own brother—to make her his again. NOTE TO READERS: This is a dark, emotional, and scorching hot love story. It features a possessive anti-hero, messy family drama, emotional trauma, and morally gray decisions. If you’re looking for a soft romance with flowers and sunshine, this might not be it. But if you crave forbidden passion, flawed characters, and a love story that burns through betrayal and pains… Welcome to Olivia and Damon’s world.

One reckless night, I woke up in the bed of Ethan Van Horn — my sister’s ruthless billionaire fiancé. Now I’m pregnant with his child, and our powerful families have only one solution: force us to marry. He despises me for destroying his future. I hate him for treating me like the thief who stole what was never mine. Trapped in his luxurious penthouse, every cold glance turns into burning tension and every sharp word into forbidden desire. But the real danger isn’t the man I’m forced to call husband. It’s my sister — who will stop at nothing to take back the life and the man she believes are still hers.

On the night of my engagement party, I found my fiancé with his hands in my sister’s hair. I thought the betrayal ended there. I was wrong. Minutes later, Ethan stood in front of both our families and announced that he was in love with Ava. My sister. While everyone rushed to comfort them, I became the villain for refusing to smile through my own humiliation. Then Damien Black walked into the room. Powerful. Untouchable. The one man Ethan feared. Before the night ended, Damien handed me a contract. One year. One marriage. One chance to save my father’s company. All I had to do was become his wife. I should have said no. Instead, I signed. Now my ex can’t stop watching me. My sister can’t stop competing with me. And the man I married keeps protecting pieces of me I thought nobody noticed. The problem is that Damien Black is hiding something. And every day I spend with him makes me less certain that our marriage was ever supposed to be just a contract.

“You’re getting engaged tomorrow.” My father said blandly as if he was talking about the weather. But that wasn't my problem. The problem is I’ve only met the girl once… and I don’t even like girls. No one knows I’m gay. Not even my father. So, the night before the big party, I did something stupid. I went to a bar. I got drunk. And I kissed a stranger. He was hot and dangerous in the best way. We had a one night stand. One night. That’s all it was supposed to be. Until the next day... when he walked into my engagement party. My fiancée turned to me and smiled. “Meet my brother.” I looked at him, frozen. And then he said, with a smirk— “Nice to meet you.” My heart dropped. This wasn’t just a one-night mistake anymore. Now, it’s the beginning of something dangerous... and maybe something real. Something I wanted.

Three months, she was supposed to live with her sister's family for three months but how will she survive living in the same house with him when she harbors those nasty thoughts? How will she survive living in the same space with him when he was the reason she left for Paris three years ago? How will she hide the love and lust she has for her sister's husband?

I woke up in bed with my sister’s fiancé… naked, confused, and accused of drugging him. The cameras say I did it. The media says I ruined my sister’s engagement. My family says I must marry him to fix the scandal. But I remember nothing. Now I’m trapped in a marriage with a man who looks at me like I’m dangerous… while hiding a secret that could destroy everything. Someone framed me. And if I don’t find out who did it before this one-month marriage ends, the truth might be buried forever… along with me.