The summary is:
The speaker is a YouTuber who tests the loyalty of men by flirting with them online. She was contacted by a subscriber who wanted to check her boyfriend, who used to be her best friend. The speaker found out that the boyfriend created a fake account of his brother to chat with her and admitted that he cheated on his girlfriend several times. The speaker decided to take revenge on him by posting his phone number and profile on various websites, including a dating site for men. She also shared the screenshots of his messages with his girlfriend, who was shocked and angry. The speaker asked her viewers to like, comment and subscribe to her channel.
Here are the key facts extracted from the text:
1. The text is a transcript of a video where a girl tests a guy's loyalty by pretending to be his brother's girlfriend.
2. The guy fails the test by admitting that he cheated on his girlfriend and that he created a fake brother account to talk to the girl.
3. The girl takes revenge on the guy by posting his phone number and profile on various websites, including a dating site for men.
4. The guy gets angry and threatens the girl, but she doesn't remove the posts.
5. The girl asks the viewers to like the video and subscribe to her channel.