Revenge Deal; my ex-mate’s father desires me

Shirley's POV "The Alpha Prince of Lunar pack, Prince Derek has arrived safely at the park and will be spending the night at the Deluxe hotels and Suites!" The newscaster's voice broke into my train of thought and my heart almost jumped out of my heart as I jerked off the bed. My eyes almost popped out of my sockets as they fixed on the TV just in time to capture Derek's face on the screen. From the angle of the pictures, I immediately knew it was taken in secret. Alpha Prince Derek was none other than my mate and more than anything, I was shocked to stupor. Derek was back and I was just hearing from the news? He hadn't told me he would be coming tonight. He had told me he would be coming the following week. Did he change his mind? Or was he trying to surprise me? I wondered as I slipped into a comfy joggers and a shirt. My face lit up at the thought of him surprising me with his unannounced presence. Too bad! His little secret has been exposed. I grabbed the mug of coffee on my bedside table and emptied the contents down my throat to calm my racing pulse. I'd be damned if I lied that every single hair on my back wasn't standing on end now. "Finally, girl. We're going to get laid tonight." My wolf, Aurora giggled in my head, only adding more to my excitement. Today made it two years since I had last seen Derek, my mate and boyfriend and these past two years had been close to hell. I had been keeping myself only for him. Anyway, it was bound to end tonigh. I got out of the house and flagged down a taxi that took me straight to Deluxe Hotels and Suites. I was sure the receptionist would never reveal the room of the alpha prince, especially when most people didn't know the price had a fated mate already. So, there was only one way to find out. I dialed Derek's number and just like I had expected, I heard the familiar ringtone drift from the second floor. I hurriedly climbed the stairs and started towards the room. Room 375. I looked up at the number plaque on the door and a slight shiver ran down my spine. I couldn't tell if it was from the excitement pumping through my veins or from the sudden feeling of dread that crept into my guts. I shrugged it off and slowly turned the doorknob. At that same moment, just before the door opened, I heard a low throaty moan drift out from the room and blood drained from my face as my hands froze on the doorknob. The next sound that followed had my head reeling. it was the unmistakable sound of flesh slapping against flesh. My heart skipped countless beats as air snapped out of my stomach. "Faster....!" A feminine voice said in a breathless and husky tone. I felt blood drain from my hand and my knuckles turned white where I gripped the doorknob tight. The voice was undoubtedly my beloved stepsister's voice. Sarah! "Harder, please... Derek! Yes! f**k me like a man!" As she mentioned the name, I felt my heart shatter into tiny shards. What in the moon goddess' name was happening there? Derek and Sarah? No way that was possibly happening! Both of them were sworn enemies. Right from time, Sarah had always disapproved of Derek and had claimed he was only interested in me because of my body and he would never let the pack members know of our matebond. "He would end up dumping your ass, Shirley!" She had warned. So what the hell was she doing in his room? And Derek, he sure hated Sarah too. My body was trembling with temper as emotions gnawed at my heart and threatened to pull me apart. I couldn't hold it in any longer as Sarah moaned louder. The dam broke and tears flooded me and slid down my face. How dare they do this to me!? I growled inwardly as I wiped the tears. I had to see them for myself. With anger coursing through my veins, I pushed the door and it swung inward. I was expecting it but it still broke me to actually see my mate naked with his shaft half buried in my stepsister, both of them dancing in a fast rhythm and panting heavily. What made me angrier was the fact that they didn't even notice that I had entered the room. The whole world seemed to be spinning right beneath my feet. If anyone had told me that I would catch my boyfriend and fated mate cheating on me with my sister, I would have cursed such a person. But here I was now, watching them in the act. Tears of anger welled up in my eyes and I fought the urge to let them drop. I couldn't give them the satisfaction of hurting me! "You shameless bastards. How dare you do this to me?" I yelled and that was when they noticed me. Immediately, they stopped what they were doing and sat up in the bed. But to my uttermost shock, they started kissing right in front of me as they tried to catch their breath. My gaze flickered to Sarah's face and I couldn't fail to discern the sharp glint of derision beneath her eyes. She had a faint smirk lurking around the corners of her mouth as she kissed Derek. As if to spite me, she's started making some sounds. "Oh, babe. You're so sweet. Can't we just continue making love? The intruder could join us if she wants!" She mumbled incoherently against Derek's lips. A shocked sigh tore out of my throat as I contemplated whether to cry or laugh. How could my own sister who had always pretended to love me be so shameless to even utter something so disgusting? Was this really happening? Moon goddess help me! I could break someone's bones today! My blood was pumping through my veins and I felt my eyes blare with rage as I grabbed a chair and swung it across the room. "What the hell do you think you're young, Derek? Wasn't it shameless enough for you to cheat with me behind my back? Now, you're even as brazen as to do it in my presence?" Derek's derisive snicker cut across the room and he stood up and approached me. I was expecting to see guilt and remorse in his eyes but what was boldly written on his face was fun. The bastard was having fun right now? How could I have foolishly been in love with this animal for three years? He towered over me now as he whispered against my ear. "I wasn't going to let you know this way, but how did you even find out I was in town?" "What?" I asked in disbelief. "How can you be interested in that when I just caught you banging my sister?" My voice croaked out. "How could you shamelessly sleep with your mate's sister?" My voice had risen an octave as I shot him a chilling look. "Cut your losses and stop whining, Shirley!" Sarah retorted sharply, glaring at me with disgust. "Do you think a filthy omega like you deserves to be called the Alpha prince's mate?" Her words were enough to make my jaws drop. How could anyone be as brazen as this? Especially, after being caught in the act? The constraint I put over the bubbling dam in my eyes broke and it streamed onto my face in large waves. My eyes glistened with tears and savagery at the same time as I lunged at Sarah and made her yank her hair. Too late! Derek held me by the wrist and pulled me into his arms roughly as he glared down at my face. His grip was too tight on my wrist and they were beginning to hurt. Anger burst through my veins as I wriggled out his arms and smacked my palm on his face. The sound reverberated across the room and he staggered backwards from the impact. He growled angrily. "How dare you lay your filthy hands on the future Alpha of the pack. You must have a death wish. I'll show you how I treat filthy objects like you!" Before I could comprehend what was going on, his rough hands grabbed my neck and strangled me. Almost immediately, something sharp and cold sliced through my skin and emptied a hot fluid in my veins.