Almost three years ago I met my partner although we weren’t yet exclusive,I was very quickly introduced to his friends.One of them being quite a few years older than the rest of us. We were all 18 and he was 24. I thought it to be alittle bit strange from the beginning that a grown man was friends with a group of teenage boys. For acouple of months our whole friend group would go to this older mans apartment,as we thought it was cool as he would allow us to throw parties at his place. It was never mentioned that he was in a relationship but we later found out his girlfriend was three months pregnant with his child. He hid all photo evidence of his relationship in his apartment and would constantly allow underage girls to attend our parties. In one situation a 15 year old girl at the party explained she had hooked up with one of the guys,as these were my guy friends I asked which one? She explained it was the oldest guy,meaning the 24 year old with a child on the way. I brought this up to the guy I was dating as he shrugged this off at the time ,explaining that the 24 year olds girlfriend was infact my now boyfriends older sister. I was confused as to why we didn’t find out about this until a few months in that the older man was dating the guy I was datings sister? Why was it such a huge secret? Fast forward and I began officially dating my partner and it was time to meet his family. I met his sister accompanied with the 24 year old we had previously been partying with months earlier. He played it off as if it was the first time meeting me,as his child was now born and he was playing the role of doting father. For majority of my relationship with my boyfriend ,his sisters boyfriend grew more and more inapropriate towards me. There was certain occurrences that I started to pick up on and track,as his behaviour was becoming concerning and borderline inapropriate. There was a time I was in the shower and I heard my boyfriend on the other side of the door telling the 24 year old that I was showering and not to go in there. Acouple seconds later I heard my boyfriend in the kitchen talking loudly with his mom as I heard the door handle turning, I asked who’s there? And in response I hear the 24 year old on the receiving end of the door and then my boyfriend asking him why he was trying to go in the bathroom after he had told him I was showering. It became an issue for me when I was in the bathroom looking in the mirror and the 24 year old entered the room looking for something and very slowly rubbed his erect penis against my body,I jumped and attempted to exit the room. But he had grabbed hold of the door and closed it slowly,I calmly told him to let me out and he obliged. At that point I told my boyfriend what he had done,and he explained it away as “I was drunk” to my boyfriend. All of this went on without any bodies knowledge until he went too far. October 2017 was the day he sexually assaulted me. He invited us over to his new home as a house warming get together,my boyfriends sister was at their parents house for the night with her one year old baby and she knew we were going to her house to hangout with her boyfriend (no longer 24 years old but now 26). After the night was over we called for a taxi,my boyfriend and his brother in law were talking in the kitchen. I admittedly was intoxicated as I was drinking wine,I became really tired and dozed off on the sofa. Whilst my eyes were closed I felt fingertips running up my legs,I thought that because I was intoxicated that it wasn’t really happening or that it was my bf. The fingertips stopped at my privates,and ran along my privates multiple times until I felt a rubbing sensation directly on my privates and a forceful finger pushing against the outside of my leggings. I opened my eyes to see my boyfriends brother in law to be the only one of the couch next to me. I crawled off the sofa onto the floor to move away from him,as I couldn’t rationalize what had just happened. I felt him crawling behind me following me on the floor around the sofa,I was beginning to feel startled at this point and couldn’t think what to do,I initially froze and “played dead” on the floor I rolled over towards the couch closed my eyes tightly and wished him away. He rapidly tugged at my clothes,pulling at my leggings until my underwear and leggings were down 6 inches,exposing my naked bottom. My boyfriend entered the room cussing as I broke from my catatonic state,as a altercation broke out between the two of them. Older brother in law threw my boyfriend to the ground and was on top of him ready to thrust down his fist with a huge blow. I did the only thing I thought to do and that was to protect my boyfriend,scared and filled with panic I jumped on my attackers back choking him down to the floor. Within seconds I was out the door and down the dark country road,he had jumped in his car looking for me so slumped into a water filled ditch in a effort to hide from him. My boyfriend was the DD for the night and he later explained that when he got in his car to leave his brother in law repeatedly punched him in the face and kicked off his side mirror on his vehicle. I made it to my house after flagging down a taxi,my boyfriend came to my home and held me all night while I sobered up to relive the night in my mind in utter confusion and shock. This calculated predator returned to his girlfriend and proposed to her hours following the attack. He had my boyfriends whole family in the palm of his hand with his web of lies. He made up a story about how my father came to his home in the middle of the night and threatened to murder him,my father attacked him and he played the victim. This story is completely fabricated. My father doesn’t know who he is,and my father doesn’t know what he did to me. My boyfriend and I stayed quiet for a while while we figured out the best time to tell his parents. When we explained what happened,they cried but later allowed their daughter to marry him. My boyfriend is no longer in touch with him or close with him,he also keeps a lot of distance from his family out of disgust of them covering it up. They never told their daughter what he did,and we live with the truth everyday. We both hate his brother in law,but his family require us to be civil.