My Ex-Girlfriend (F24) Is Truly the Worst Woman I Ever Met in My Life

My ex-girlfriend (F24) visited me (M24) last night. We had sex and we were watching a movie when she started talking about how men have never been able to satisfy her sexually. I asked her why that was and she said because of my small dick size. She said that I was the smallest dick she had ever seen and she even joked about how her middle finger is bigger than it. She started complaining about how I couldn't satisfy her sexually and she said that is why she left my ass in the first place. And then, she started talking about how she's been sleeping with random guys in the park and at the mall and stuff. She literally went into detail about how she met up with a guy at the store and she sucked his dick in the dressing room and stuff. I was kinda mad but I didn't say anything. Then she got up and said she was gonna go smoke a cigarette outside. She had a suspicious bulge in her jacket so I asked her what was in there. She said it was a pack of gum but I reached into her pocket and this dildo literally fell out of her jacket. I asked her why she had a dildo and she got mad and said I shouldn't touch her stuff. I never saw a dildo before in person. I asked her what it was for. She said I wouldn't know anyway since my dick is so small. It hurt my feelings since I'm already insecure about my small size already. She said that I can't satisfy her with my small dick so she satisfies herself with a dildo. I told her she could have just told me about it instead of lying to me about carrying a pack of gum. I said that I was gonna throw the dildo away and she got mad and said she would never see me again if I threw it away. She said that dildo is important to her and she said she used it to pleasure her vagina every night. I thought it was disgusting but I let her keep the dildo and she left after she finished her cigarette. She texted me and said I'm a loser for letting her keep the dildo so now I'm thinking about it. I'm starting to regret it.