CHAPTER THIRTY-ONE: ERIC FINDS OUT THE TRUTH ABOUT THEIR RELATIONSHIP

GRACEHayden was a few steps away in a black suit, speaking to one of the board members. He kept glancing over at me like he was keeping track of where I was.“Grace, Hayden, come here.” My mother called out.I turned. She was walking toward us with her hand on the arm of a man I had hoped never to see.Eric.My stomach twisted hard.Mom smiled like she was delivering good news. “I want you both to meet Eric properly. Eric, these are my children. Hayden is my stepson, and this is Grace. You two already know each other, of course.”Eric’s eyes landed on me first, filled with shock, then he looked at Hayden and sneered.My stomach ached. I knew that look all too well. It wasn’t anything good.Mom kept talking, bright and oblivious. “Eric and Grace have been dating since they were in high school. Right, you haven’t mentioned him in a while, darling.”Heat rushed to my face. Hayden’s shoulders went rigid. I felt like rolling my eyes at her words. How could I mention someone I was no longe

Last Updated : 2026-08-16

CHAPTER THIRTY TWO: ERIC’S BLACKMAIL

GRACEDing.I picked up my phone to see a message from an unknown number.My hands shook, and I nearly dropped the phone as I saw a picture of Hayden and me kissing.“If you don’t want this published in the school blog with an eye-catching caption, meet me tonight.”I instantly knew it was from Eric. Only he would be stupid enough to try to hold this over my head.My hands wouldn’t stop shaking as I stared at the screen.I closed my eyes and pressed the phone against my forehead. I felt sick at the thought that I was at his mercy. This wasn’t the right time to let our parents know about my relationship with Hayden.“Where?” I asked, frowning.He replied with a hotel name and room number.“Shit!” I cursed, feeling the urge to smack my phone.My first instinct was to call Hayden, but I didn’t want the situation to escalate even further.“Is everything okay?” Madison walked into the room and asked.I sighed, not knowing where to start. My red eyes were a giveaway that everything wasn’t o

Last Updated : 2026-08-17

CHAPTER THIRTY-THREE: HAYDEN FINDS OUT THE TRUTH (1)

HAYDENI tolerated it for two days max. I watched everything quietly, not saying a word about what I saw a few days ago. I knew my Angel. She wouldn’t go back to Eric just like that. She has been so jittery for the past few days, and I had no idea what the problem was, and I wanted to resolve it.I was angry at her for keeping things from me. My heart split in half, I wanted to badly believe that there was nothing between them. I couldn't ignore the fact that he was her childhood sweetheart. I stood in the doorway with Grace’s phone in my hand, going through her chat with Eric. Deleted chats that I had recovered.He was threatening her. I was mad at him but madder at Angel for not coming to me first.Grace was on the couch when I walked in. She looked up, saw her phone in my hand, and she went pale.“Hayden,” she called, her voice shaking.“Yeah.” I set the phone on the counter harder than I needed to.“Care to explain this?”She stood up fast. “It isn’t like that.”“Then what the fuc

Last Updated : 2026-08-19

CHAPTER THIRTY-FOUR: HAYDEN FINDS OUT THE TRUTH (2)

GRACEThe second he pushed inside me, I felt the stretch and the burn and the overwhelming fullness all at once. Hayden was thicker than usual somehow, or maybe I was just more sensitive after the spanking. Every time his hips met mine, the fresh marks on my ass came alive, and I felt it in my clit. I couldn’t decide if I wanted to push him away or pull him deeper.“Fuck, Hayden…”“Quiet.” His voice was rough above me. “You take this. You feel every inch of me, and you remember who you belong to.”I nodded, eyes locked on his. Hayden’s eyes were dark, and I could still feel he was angry.And it made my pulse race.He leaned down and bit the side of my neck, not hard enough to break skin but hard enough to leave a mark. I arched under him.He fucked me, and I thought I was going to break. It was deep and relentless. The headboard knocked against the wall. My nails dug into his shoulders hard. Every thrust forced a broken sound out of my throat.“You feel that?” he growled against my ea

Last Updated : 2026-08-20

CHAPTER THIRTY-FIVE: BEATING UP ERIC

HAYDENI knew how angry I was that Eric’s blackmail made Grace lie to me. “Fucking bastard,” I hissed. “Man, are you okay?” Ryan asked as he watched me furiously type on my laptop. “Eric is blackmailing Grace,” I said to him. “What the hell?” He sighed, looking furious too. “Where is Grace right now?” “She is sleeping in my room.” “What are you going to do about it?” I looked at Ryan, my eyes dark. “Throw his stupid ass in jail.” “Why don’t I send my guys to deal with him?” I looked at Ryan and nodded. His family was an old generation of Mafia that was trying to leave the old life behind, but they still dabbled in it. “Thank you, man.” I patted his back. “Look what I found.” I turned my computer to him. “Gotcha… He better start praying.” I sent the evidence to Eric’s coach and to the dean of his faculty. “Come with me.” Ryan dragged me outside with him. I was wearing a shirt. “I hope we won’t take much time,” I said. I didn’t want Grace to look for me. “Nope.” We entere

Last Updated : 2026-09-16

CHAPTER THIRTY-SIX: GRACE TRUE PARENTAGE

GRACE“Did you see what happened to Eric?” Madison said with a huge smile on her face.“What happened to him?” I looked at her, confused.“The police took him away for drug use,” she replied, shoving her phone in my face.I took the phone from her, going through the comments on it.“Serves him right.”I wondered if it was Hayden’s doing.“Why aren’t you celebrating?” Madison asked.“I’m happy as long as he is out of my hair.” I sighed. I didn’t think there would come a day when we would turn into enemies.“This calls for a celebration,” Madison said, hitting my shoulders.“I hope your celebration doesn’t mean partying,” I said, sighing.“Of course,” she giggled. “That is exactly what it means.”“I’m not interested.” I wasn’t going to a party. “I want to be with Hayden tonight.”“I’m sure he will understand if you need a girl’s night.”“Yeah, however, I prefer to be with my boyfriend.”“Since you got into a relationship, you’ve forgotten all about me,” Madison faked a cry.“Don’t be si

Last Updated : 2026-09-16

CHAPTER THIRTY - SEVEN: THE BREAKUP

HAYDENI heard the words, and everything inside me shattered.“Grace is my daughter,” my father said.I could hear the excitement in his voice.I moved backwards, stumbling. I shook my head. I didn’t want to believe it.“Grace is my sister,” I muttered.“My sister is my girlfriend.” I laughed at the irony.I turned and ran.Back to my house in school, I couldn’t stand the walls of the mansion. They reminded me of the truth I still hadn't accepted.I drove to the house, ignoring the call from Grace. I looked at my buzzing phone.“Slam!” I punched the steering wheel in annoyance. “Fuck!” I yelled.The world was against me. I had finally seen someone I loved wholeheartedly and was told she was my sister.“My fucking sister.” I looked at my face in the mirror and couldn’t believe I was the one, tears streaming down my face and my eyes bloody red.Grace’s name lit the screen again and again. I squeezed my fist to stop myself from picking up my phone.“I’m sorry, Angel,” I whispered as I tu

Last Updated : 2026-10-04

All Chapters of Stepbrother Mine: Sinfully Yours: Chapter 31 - Chapter 37

CHAPTER THIRTY-ONE: ERIC FINDS OUT THE TRUTH ABOUT THEIR RELATIONSHIP

CHAPTER THIRTY TWO: ERIC’S BLACKMAIL

CHAPTER THIRTY-THREE: HAYDEN FINDS OUT THE TRUTH (1)

CHAPTER THIRTY-FOUR: HAYDEN FINDS OUT THE TRUTH (2)

CHAPTER THIRTY-FIVE: BEATING UP ERIC

CHAPTER THIRTY-SIX: GRACE TRUE PARENTAGE

CHAPTER THIRTY - SEVEN: THE BREAKUP