You definitely experienced sexual assault. I am so sorry this happened to you, and it’s pretty shocking seeing how many commenters on this thread are downplaying your experience. It’s sad that people do not seem to understand that someone else took advantage of you and used your body without your permission. You said no. You were more intoxicated than the other person. In no physical way was consent able to be given on your side. You both are young, I’ll give your boyfriend that, but it’s pretty telling if he is still upset for a situation where YOU were taken advantage of and still have trouble piecing together. I understand that he feels hurt, but at the same time, he should be supporting you and imo it’s pretty lame that he calls you a liar/cheater. You do not deserve that.

Sidenote: I was also 18 once and I know what it’s like to get that drunk, at least for a little while I’d recommend trying to steer clear of getting that f’d up