Well, I'll give you a summary. Yesterday, my uncle called me and told me that he saw my 17-year-old cousin and my 19-year-old cousin (they are brothers) having sex. My uncle told me that he organized a party to celebrate his best friend's birthday. My uncle invited most of our relatives but they were busy. He also invited me but I didn't want to come because I was lazy and it was boring. Then my uncle told me that since we were busy, he decided to invite my cousins. Surprisingly, they wanted to come just for the cake. Then, when my uncle's best friend and my cousins ​​came to my uncle's house, they started celebrating, and after two hours, my uncle's best friend went home. Afterward, my uncle said my cousins ​​wanted to stay a little longer at the house just to watch a movie. My uncle told me to let them stay a little longer and made them go into my uncle's room since inside there is a large television and a comfortable bed to watch the movie, after that my uncle left them alone to watch the movie quietly and then my uncle went to a store near his house to buy some chips and doritos to eat, when my uncle returned home he went upstairs to the room to give them the chips and doritos but just before entering he heard some moans, my uncle thought it was a scene from the movie, when he opened the door a little he saw my cousins ​​​​having sex my uncle was surprised and quickly left the room since my cousins ​​​​did not notice his presence, after that my uncle went to the kitchen confused and disgusted by what he saw, after 1 hour my uncle stopped hearing the moans, then he said that my cousins ​​​​went down and saw each other sweaty and excited. Afterward, my uncle told me he just said hello and told them he'd already brought some food. After my cousins ​​finished eating, they left, and my uncle sat on the couch, still in shock from what he just saw. After he finished telling me all that, I was confused and disgusted. Then I asked my uncle if what he was telling me was true. He told me he wasn't lying and swore he'd seen them. Honestly, I don't completely believe him because the last time I visited my cousin, they seemed distant and didn't even talk to each other, and they sometimes argued. Well, then I asked him if he'd told any of our relatives, and he said no because he's afraid of destroying the whole family. I was silent for a moment, and then I told him he should tell the whole family, but he told me he didn't want to and that it was better for me to do it. After that, we remained silent, and I told him I'd think about it and then hung up. What do you think? If what my uncle says is true, I don't know what to do. Should I tell my mom? I'm against incest because it's disgusting. Honestly, I don't know what to do. I don't want to destroy our family either. Please tell me what I should do... (This is real, not fake.)