consensual sex question???

Cassie • sup
okay so I'm almost 21 now ((was 19 when I got w my boyfriend a lil over two years ago)) n when I got w him IN MY OPINION I was a virgin because I had never had CONSENSUAL sex with anyone before.  I was sexually assaulted at a party three months before I met Max ((my bf)) n I don't think the guy actually had sex with me ((I was all fucked up on xanax)) all I remember was he was on me n I know he tried at least cuz it hurt but he didn't actually do anything extensive I don't think??  either way my question is is it wrong for me to tell my boyfriend i was a virgin when we slept together??  cuz in my opinion I was I had never had sex with anyone of my own will before I just don't want to be a liar if it really is wrong of me to tell him that...  ((he knows about the assault))