Losing my virginity [MF]

First time on this subreddit and won’t be my last if this goes well. So on October 14th of 2014 I was attending one of my favorite bands live in concert and it was my very first concert ever so I was really nervous seeing them live. By the time I got there 4 hours early there was already a huge line around the venue so I stood in line behind a group of girls (3) and they all started talking to me about the band and our favorite song/album and such. We all talked for hours until security let us in the building. Once we were all in they offered me drinks and at the time I was 18 so I wasn’t legal to drink but I couldn’t turn it down so we all got a few beers in while watching the opening bands play their songs. The one that was talking to me the most was this girl named Emily (long blonde hair, brown eyes) after about 30 minutes of the music playing she leaned over to me and asked

“Do you wanna do some coke?”
“What?”
“Do you wanna do coke with me?”
“WHAT?”