عاقبت أخي غير الشقيق على خيانته من وجهة النظر

I was leaving my room when I saw my best friend come out of my stepbrother's room and tell me that she had sex with him. I was terribly angry, because only I could have sex with him. I decided to punish him and make him cum so many times so that he understands that there is no one better than me, his stepsister, in the world.