Should I go to my sister's job or not?

Hi, this is a real memory that happened to me and made me doubt and I do not know what to do, and to say from the beginning that it is not very sexy, the names are all pseudonyms, my name is Arash, 28 years old, with a normal face, I have a sister His name is Saghar, who is about 23 years old. He used to be a little tall, but he has been going to the club for some time. It started that sometimes I would go to my father-in-law's house for work or whatever, because we always go with my wife to see her. I was invited to go there for dinner. When I arrived, my father-in-law was going out, and when I arrived, I went inside and he went home. I saw that there was no one, but the sound of water was coming from the bathroom. I was watching TV when the bathroom door opened a little and Saghar said can you go out, let me go to my room, I also said ok, I went out of the house The door was open, I was standing behind him to go and call me to go inside the door, clinging to the wall, there is a tall mirror. I turned around for a moment and saw Saghar through the naked mirror of her mother who had come out and wanted to take her clothes and go into the room because she thought that no one had taken her clothes out. When I saw her, I was nailed. I see Saghar noticed me at the same moment, but very naturally he bent down naked, took off his pink shorts, took off his clothes and went to the room, and then he called me and I went inside that day, nothing passed between us and It did not change. After this incident, I paid more attention to Saghar and tried to see him a little, and I paid more attention to his behavior, and I was suspicious of him until I realized that his head and ears were shaking a little. He had a lot of MS in his ear that he used to text or text to the boys. Some time later, he received suspicious text messages saying that Saghar was doing this and with I started talking to Saghar anonymously, and when I realized that he was answering yes, I told him that someone had given me a question and he said so and he would not accept. One day, when he was alone at home, I went to his house and forced him to tell everyone and you He did this and he also said that he did not accept to see his body in the end and when I undressed him, I ate his upper body and his chest, he immediately sighed out of lust, but because the conditions were not favorable, I was satisfied with that amount and left From that day on, I will not let him catch him alone, but I doubt him very much. He was riding, I was pushing him, I was touching his buttocks nicely, he noticed, but he did not say anything.