ADN-314 Silently watching his girlfriend being fucked by his senior right before his eyes

Rika and I have been dating for a month. From the first time I met Rika at the club, I liked her. I wanted to be there to take care of her and bring happiness to Rika. This is the happiest time of my life. I thought she was feeling the same way as me but no! My self-deprecating personality always makes me think I'm not worthy of Rika. Even though we've been together for a month, I don't even dare to kiss her. At night I forced her to go home. Rika was so disappointed that she went to the park to drink alone. By chance, a man met Rika and sat down to confide in her. He is very good at talking. Rika quickly confessed that he wanted to have sex with me, but I always refused him. He invited Rika to his house and using his experience as a playboy, he quickly made Rika agree to go to bed with him. A month later, I met the senior I hated so much, he took away the person I loved unrequitedly. He invited me home and showed me videos of his "victories" of hunting girls. When the person in the video appeared, I was shocked that she was my girlfriend!!! It turned out that the two of them had been making love continuously for a month, and every time he ejaculated straight inside her. And when he went out to buy alcohol, he brought Rika back with him. I quickly hid in the closet and witnessed the entire scene of my girlfriend being fucked by the person I hated!!!