If you have ever gone looking for a Bible verse on whether or not you can have sex before marriage (or, God forbid, done a Google search) you might be surprised to find the Bible’s instruction indirect and vague. The Bible assumes that sex only happens within the covenant of marriage so most of the time, sex before marriage is not addressed directly.
In Genesis 2:18-25 we read that Adam is single and it’s not good. God creates a woman from Adam’s side (deep symbolism here) and Adam sings the first love song (see v. 23). God invents marriage in v. 24, “that is why a man leaves his father and mother and is united to his wife, and they become one flesh.” Sex is a symbolic union. In the same way that two bodies are connected, two people are bound together on multiple levels; body and soul.