my boyfriends best friend...

5 days ago I was sexually assaulted by my boyfriends best friend. I’m still shaken up and coming to understanding of what happened, I’m 16 and have been with my boyfriend for a year and a half. I told my boyfriend 2 days after it happened, the guys girlfriend left him because of what he did. He came to my house when no one was home, I was about to make breakfast and I let him inside because he had previously gotten out of the hospital the day before and didn’t want him left outside, just following my natural instinct, next thing I knew we were sitting on my bed and he was grabbing my arm and waist pulling me next to him. He climbed on top of me and pinned my arms down as I was yelling for him to stop and get off. He choked me to the point of almost strangling me, I couldn’t move. I’m small, about 100 pounds and he is twice my size almost and extremely muscular. Any time I tried to fight back he would press down on my throat so I couldn’t breathe. He constantly tried to pull down my shorts and was grabbing at my stomach and butt. I don’t know what I should be feeling right now. I’m upset, scared, mad. His girlfriend from then is telling people around the school acting like she’s the only one who was hurt by this. So people know the story as “her boyfriend almost raped a girl” instead of “______ was almost raped by her boyfriend” it makes me so mad also because he is acting like nothing happened and that he did nothing wrong. I’m sorry for such a long post but I needed advice and this week had just been the hardest and I don’t know what to do.