ADN-314 My girlfriend fell in love with the class's bad boy

I know a guy in class who is older than me, he is a bad boy and a real playboy. Just a few days after I showed off my girlfriend to him, I had to swallow the bitter fruit when I saw with my own eyes the sex clips between him and his girlfriend Tsumugi Akari, whom I cherished and pampered and only dared to kiss on the lips. Yet, before I could do anything, she was fucked by the guy I was always jealous of. The suffering was even more extreme when she was fucking this guy in the room and I just dared to look through the door and cry.