Chapter 1

　　Eero's perspective 　　“I'm gonna meet Cohen once we're done patrolling the border.” I couldn't hide my excitement from Soleil, my best friend, as I said those words to her.  　　Stopping her footsteps, Soleil leaned towards my direction upon hearing this news.  　　“Oh yeah, it's your 10th anniversary today! I don't know how things are going on between you, but is Cohen showing some signs, hinting, or dropping clues that he would propose to you? It would be meaningful if he did it today. That would be a wonderful way to wrap up this decade of romance.”  　　Soleil pouted her lips as she looked at me, waiting patiently to find out more about our plans for the anniversary.  　　What was I supposed to tell her? Cohen hadn't said anything about this day, but who knows? There might be a surprise waiting for me at home. 　　“Wait! Am I picking this up right? Does your silence means that Cohen, your mate for ten years, didn't get aything special about this significant day?”  　　“Here you go again. You're always too quick to judge. I'm sure that Cohen has got a surprise for me. Our 10th anniversary will be special. It has to be.” I emphasized the last sentence to Soleil, and to myself.  　　Soleil only shook her head. She was not exactly a fan of my relationship with Cohen. She kept her lips shut most of the time because she knew how Cohen made me happy.  　　“You know what? I used to be jealous of you because you met your mate as early as you did. But oh girl, I don't think you're that lucky as Cohen turns to be this mate. It's like that he doesn't really care about you.”  　　“Soleil! You're crossing the lin...Ouch!” A sudden strike of pain attacked my chest as I was about to warn Soleil to watch her words.  　　"Eero!" Panicked, Soleil rushed over to hold my shoulders.  　　I found I could hardly maintain eye contact with Soleil as my heart felt like getting stabbed by an invisible knife. As if bleeding profusely inside, I could barely breathe.  　　“You okay, Eero? You are scaring me!”  　　I could tell the dread in Soleil's voice, but couldn't utter a single word to calm her down.  　　My wolf was trying to deliver a message, which sounded unclear to me at first but then scared the hell out of me.  　　“S-Something happened back...at the p-pack house. I-I...must go back...right now. ” I turned to Soleil despite the killing pain. 　　“You sure? You don't look well at all now. Shall I go with you as well?”  　　“N-No...you cannot. I-I need...you to patrol...a-along the border...f-fulfilling my d-duty here...t-today.” I closed my eyes as the pain grew stronger. My wolf could barely handle it.  　　Although reluctant to let me go drive back alone, Soleil gave in eventually.  　　Back at the pack house. 　　I couldn't help but clutch my stuffy chest the minute I got out of the car.  　　My eyes went straight to the closed window of Serra's room on the second floor. I didn't know why, but my wolf was guiding me to that particular part of our house.  　　It didn't take me long before I found myself standing in front of my sister's room.  　　From the half-opened door came the sound of heavy panting and groaning.  　　It was a mix of man's and woman's voices, both so familiar to me that my heart was bleeding dry before I could even see what was going on inside.  　　My wolf ensured me that the man inside was no other than our mate, whom we'd loved for ten years! 　　Yet I chose to disregard what my wolf was trying to communicate to me. There was no way Cohen would do this to me!! 　　I'd always known that Serra, a spoiled brat, hated me. But she couldn't possibly hate me so much that she was stealing my mate from me!!! 　　“Deeper, baby. I'm cumming. Hit me deeper, ohh! Yeah, that's it! Keep going!”  　　“You're so fucking tight, Serra my love!”  　　The last string in my heart was cut off when Cohen said those words to my sister.  　　I burst open the door, only to find my mate on top of my sister, both naked.  　　Serra's legs were spreading wide to my mate.  　　“Eero?” Serra called my name.  　　I had thought she called out of scare because I caught them cheating on me. But then I realized that I was wrong. 　　She was in fact annoyed that I walked up on them fucking before they finished orgasm.  　　Seeing no trace of remorse in my sister's eyes, I charged forward and dragged her out of bed by her hair. Until she was finally standing in front of me, naked! 　　“You fucked my boyfriend, Serra? How could you?! You know Cohen isn't simply a boyfriend to me. He is my mate! Why? Why are you doing this to me?!” I yelled at her in despair, shaking.  　　“Because I want to. Because your mate isn't in love with you. He loves me. I fuck your mate because it feels good-” Serra smirked at me after managing to pull away from me. 　　“Serra!” Cohen, who had put on his pants in haste, pushed me onto the cold floor after I slapped her.