Root & Remedy

My brother (13) touched me when I was 11 years and he still continues to touch me when he was 18 and am 16
My brother touched me while I was sleeping in my bedroom. I was just 11 years old and he was around 13. My parents were in the living room. I had no idea about these stuff but it made me feel sick. I woke up and asked him what he was doing but he left immediately. (I'm proud that I didn't freeze) I wasn't able to sleep for several months. I didn't tell my parents cuz I don't have that kinda relationship with them and they probably won't trust me. After so many years when I thought it was over and he understood his mistake,I again caught him trying to touch me but when I opened my eyes he left the room quickly. Sometimes I notice him hovering around my room and I think he still wants the chance to touch me. I don't understand why would he do that? He was all fine before adoloscence. We literally grew up together. It feels like he doesn't even feel guilt abt doing these. I thought he did that mistakenly cuz we both were small at that time but he is now 18 and I'm 16. I feel so helpless cuz I can't even share this to anyone. But how I'm even supposed to stop this. He acts completely normal around others and also around me but when he thinks I'm sleeping he acts like this :) I don't wanna ruin my family environment,my parents aren't that understanding( if they find this out they will probably beat him to death or blame me) But I can't even tolerate this. I think he already knows I know but this is also not making him stop. What if things get worse. I'm afraid he has p**n addiction. The cycle has returned again and I feel like someone is watching me while sleeping or around me even if there's no one. Sometimes I feel like he deserves so bad for what he has done to me and again I feel so sympathetic for him. I'm so sorry but I just can't imagine my brother like this I really love him. But also how tf it's ok to not do anything. How long will I pretend to be ok. It feels like I'm allowing to do this to myself :) but i don't really know what to do! Please if there is any advice for me please comment thank you.