The word you're groping for is MARRIAGE.
I don't think premarital sex in a committed relationship is bad nor do I think God gives a hoot over it(it's not his main criteria put it that way)
There is a couple in my hometown who have lived together for 30+ years. 4 kids. True soulmates. When you hear of a spouse dying a day after the other spouse this will be them.
The man is a a contractor by profession and has practically rebuilt the local church over the years w/o fanfare nor reward. His "wife" has spent more time volunteering at the church than anyone and is involved in numerous civic activities that help people.
Is God going to punish them for not being married over another "Christian" married couple who while religious and believing in God does not walk the walk? I don't think so.
One night stands/friends with benefits are different and is not what I was referring to.
Got a little nookie from a loving relationship between two people who care for each other before marriage.... I personally don't think God gives a hoot about it but that's me. God is looking how you lead your life, treated others, helped the poor and less fortunate, made an attempt to make the earth a better place....I think he has more important criteria...
I'm not sure that 'groping' is quite the right word for this thread.