I like this guy right but he is two years older than me

so I like this guy right but he is two years older than me. He is my best friengds brother and when I slept over last night, she left me in his room and locked the door and I was in there for like an hour and a half. Any during this time he had one of the phones you put in your ear and he was talking to his friends and every 5 mins or so he would turn it off and talk to me and ask me if I felt okay and if I was hungry and then he got off his chair and came and sat next to me on his bed, right. The he rolled me ova and sared to pull off my clothes(and not gentally) and started kissing me.That was nice but then he stuck his penis in (with no condom or lube) and it really really hurt, I asked him to stop but he just kept on going.After we had dinna me and my friend and her brother went to watch a scary movie. She fell asleep 30mins into the movie, so that just left me an him. He started to touch me in places I didnt want him to and when he stuck his hand down my pants and started to finger me he putt duck tape ova my mouth!?!?! Anyway he had sex with me again and this time was even rougher. When the movie was finished me and my friend went to bed and I told her what happaned but she didnt believe me. Anyway she stayed up the whole night with me and at around 2 she had to go pee, so I was left alone. She was only gone like5 mins but I swear I saw him looking at me through the crack off the door. Anyway I dony know what to do cause I dont want to tell my mum and im too scared to go to the police and I dont want him to get in trouble. Does anyone know what I should do!!