She says it all started when they were teenagers. Her brother got a girlfriend and they used to go to his bedroom to have sex when their parents were out, but she didn't know why that made her so mad. She was always angry with them and she didn't like the girl. After a while she changed her attitude because her brother asked her and she started to join them in the bedroom to talk and have fun. Some times things got hot between them and she always tried to separate them, until one day she started to share his brother with his girlfriend. After a year the girlfriend ended up with him and she finally found out what she felt about her brother.