Just Tell Me... You're Not Cheating, Right? Her Mouth Tells A Lie... A Cuckold Story Starting From The Mouth; Blowjob NTR Kana Momonogi

My girlfriend Kana and I have been dating since college, and now we're living together with marriage in mind. She's cute, kind, has a great figure, and marrying her would make me the happiest man. But while I was unaware, she ended up with that guy of all people! With my best friend Nitta! Doing that kind of thing... I often hear people talk about 'where does cheating start?' but I thought it was more or less the same for everyone. I thought that was true for me, and for her too. I wanted it to be that way.