Christians, are you sure that Bible says wait until marriage to have ?

I have read the Bible and I know God doesn't really like fornification but wait until marriage?, maybe He meant something else. I'm not saying sleep around with just anyone and be promiscuous but maybe there are exceptions. Just becareful who you do it with and choose wisely. Sometimes it just feels so right and what if I don't get married, I mean I don't even know if I want to get married. Does that mean no ? Are you sure the Bible says wait until marriage to have ?