Rika and I have been dating for a month. Since the first time I met Rika at the club, I liked her. I wanted to take care of her and bring happiness to her. This is the happiest time of my life. I thought she might have the same feelings for me, but no! My personality or self-doubt always made me think I was not worthy of Rika. Even though we have been together for a month, I still couldn't dare to kiss her. By the time it was evening, I had to make her go home. Disappointed, Rika went to the park to sit alone and drink. A man happened to see her and sat down to talk to Rika. He was very good at talking, and Rika quickly confessed that she wanted a relationship with me, but I always refused him. He invited Rika to his house and, using his playboy experience, quickly convinced Rika to agree to sleep with him. A month later, I met the senior that I hated so much. He stole the person I loved unilaterally. He invited me to his house and showed me a video of his conquests. When the person in the video appeared, I was shocked to see that it was my girlfriend!!! It turns out that they had been having sex continuously for a month, and every time he ejaculated inside her. When he went out to buy alcohol, he brought Rika back with him. I quickly hid in the closet and witnessed the scene of my girlfriend being fucked by the person I hated!!!