Raped

i was recently in a situation that was taken the complete wrong way with a guy i knew. basically, he asked if i wanted a small pizza and i accepted. i gave him my address & when he said he was outside, i was just gonna go to his car to receive it then run back inside but when i opened the door, he was standing right there. i assumes he wanted to share it real quick so we went to my room (mind you i'm 18, it's 1 am and have pretty strict parents so i snuck him in). i immediately sat in my desk chair as he sat on the edge of my bed. he said it'd be easier to share if i was sitting on the bed too, so i went. he put the box down and immediately went for a kiss. i dodged it and told him he got the wrong idea, he asked me "what else am i here for then?" to where i replied "you said you were just gonna drop off food. i'm trying to work things out with my ex & i'm not interested in anything other than a friendship" this got him very mad and before i knew it, his knee was on my back holding me face down into my pillow and all i can hear besides my quiet crying is my shorts being pulled off and my underwear ripping. he forced himself inside of me and when he finished, he didn't say a word. just got up, got his things and walked out. i haven't slept in my room since then and no one knows except for my ex who blames himself for moving out of our house & hates himself for it because he "should've been there for me" (he lived with me and my family for about a year) i don't want to do anything about it, i simply just want to forget and i really think i just need to hear that things will be okay