Am i in the wrong if i told my friends my ex forced me to have sex

This sounds weird cause it was ages ago and im 19 now, but a few years ago at party when i was 17 i got really drunk and i needed to pee my ex followed me in even though I didnt want him to so he forced himself in. I was really drunk but we had sex i remember saying no but didnt put up a fight and i didn want to cause we was at a party and i dont really remember what happened, i felt a shit and very ashamed about it and he said it was fine and that people do it all the time. I stayed with him a few months after this incident but I recently opened up to a few friends about after a few years and they were horrified what happened but i always thought it was normal thats why i stayed with him. It wasnt the last time he did that after. I still feel ashamed about it and now guilty that i made him out to be rapist. Am i in the wrong for saying something?