AITA for secretly spying on my boyfriend after I found out he was talking to his ex behind my back? I never thought I would stoop to this level, but I was so hurt and angry I could not help myself. It all started a few weeks ago when I noticed my boyfriend, Jason, acting strangely. He was secretive, avoiding my questions, and always had his phone with him. I tried to brush it off, telling myself I was paranoid. But then I saw a message pop up on his screen from an unknown number that said, I miss you. My stomach dropped. I could feel my heart pounding. I confronted him about it, and he brushed it off as a joke. But I knew better. I needed proof. That night, I decided to check his phone when he fell asleep. I felt guilty but also furious. As I scrolled through his messages, I saw dozens of conversations with a girl named Emma. They were flirty, suggestive, and clearly more than just friends. My blood boiled. I could not believe he was betraying me with his ex. I decided to follow him the next day. I hid behind my car as he left for work and saw him meet Emma at a coffee shop. They hugged, kissed on the cheek, and talked for hours. I felt sick. I wanted to confront him immediately but decided to gather more evidence first. I followed him to her apartment later that night. I watched from a distance as they entered together. I knew I was crossing a line, but I could not stop myself. The next morning, I snuck into his house while he was at work and found a necklace in his drawer. It was Emma's. I was devastated. I called her and confronted her, demanding to know what was going on. She admitted they had been seeing each other secretly for months. I felt crushed. I was about to leave when Jason came home early. I was caught. He looked stunned and guilty. He admitted everything. He said he was sorry but swore he loved me. I was torn. I wanted to believe him, but the evidence was irrefutable. I told him I needed time to think. Now I wonder if I am the villain for spying, or just a victim of betrayal. Should I forgive him or walk away? I am lost.