Is it against God’s Word to have Sex before marriage

I’m 17 and my boyfriend and i have been dating almost 4 years. we both share the same beliefs and even go to church together all the time. we have talked about it and i think we are both ready to do it. but i keep thinking that if we do have sex, i won’t have the relationship that i do with god because right now i’m in a great place. i know that many christians wait until they are married to have sex, but i just want to have fun and experience the world and be young while i can.