Should i wait to im maried to have se.x?

OK, so im only in 8th grade, but it seems like evryone is already taking drugs, getting wasted and doning stuff with each other, even some of my freinds. Im not though because i havent been exposed to any of that stuff yet, im a cristian, and i wanted to get somthing staight.... Is it like a sin to have se.x with someone before marriage?????Ireally dont wanna go to hell, lol.