I need help to forget this.

About almost a Year ago my moms boyfriend & I was home alone. my mom was gone too work. & I had just got home from school. well he walked in an said “Taylor; would you make me a drink an bring it into my room ?” I said sure. well I heard the shower turn on; so I knocked & said is it alright if I come in; he said yeah & I walked in to take him his drink like he had asked me & he was Naked; no clothes. now my mom & him wasnt dating but maybe 4 or 5 months at the time. & a week later he walked out in front of me naked. im really scared he is going too hurt me; or like molest me. because about a month ago he sat me down an layed his head on my boobs. my family don’t belive me anymore all that had happend so I didnt bother too tell him about laying his head on my boobs. he denyd all of it. so my mom started hateing me. & I had too move out with my grandma; I ran away from her. an she finally found me & jerked me by my hair & threw me in the car. & kicked me out of her house. now im back here. I really want too just move out. but I have no where too go. I have suicidal thoughts everyday with that & my boyfriend blames me for him using drugs everyday; when im trying to stop him. & I’ve thought about running away a numerous of times. what can I do too help me ?