Deception of Rejection

A time I had to convince someone of something is when my cousin was going to break up with her boyfriend. She had heard that her boyfriend was cheating on her from a female she use to go to school with. When my cousin told me who the female was, I was skeptical of the whole situation. The female at one point of time did not care for my cousin what so ever.  She also used to have feelings for my cousins boyfriend. My cousin was un aware of that until,  I informed her about the feelings the girl once had for her boyfriend. I know my cousins boyfriend on a personal level,  so when I heard of the actions he so called did I knew it could not of been true. I also knew how strong his feelings were for her and he would never hurt her. When I approached him about him cheating he explained the entire story to me. The girl had appraoched him and told him to leave my cousin for her,  he told her no and she was devastaed and dashed off. I told me cousin about this and she confronted the girl and thanked me for not letting her make a stupid decision.