My girlfriend was taking a nap. Suddenly, I noticed her phone next to me. We've been dating for three years, and I'd never looked at her phone before. I just felt uneasy, and this was the first time I'd looked at it. The photo folder contained pictures from her graduation ceremony, photos from our dates, a folder full of memories…wait, what's this? Unrecognizable photos and videos. What's going on? She's sucking the penis of a stranger. When was this video filmed? It was recently filmed. The pure and gentle girlfriend I know isn't in the photos on her phone. There's a completely different, promiscuous woman there, instinctively and greedily devouring. What's going on? Another day, I secretly looked at her phone while she was asleep. The video had been updated. And she was being roughly treated in a M-play, looking very comfortable. I felt so resentful…but the sight of her being NTR'd aroused me, and I unconsciously started masturbating. Yes, I was excited by the sight of her being NTR'd; my brain and penis were racing. A perverted fetish awakened. She just found out. He tried to check her phone next to her, who was pretending to sleep, as usual, and that's when he got caught. Is this how our three years together ended...? No, it's not the same. This is the real beginning. She said she seems to like me a lot, but she can't forget her crush's penis. She just wants to continue liking me. Well then, let me see what you look like when I NTR you... That's how our strange relationship began. I secretly watched her climax and go wild during a live phone call, then masturbated in frustration... That's the most satisfying thing! ※This is an NTR story where the sexual desires and needs of a girlfriend who wants to cheat and a boyfriend who wants to be NTR'd are completely aligned.