The world today is making it seem as though it is normal to have sex outside of marriage; oh, by the way, this is called fornication. It is not acceptable to God.
The Bible clearly states fornicators will not inherit the Kingdom of God; you will not have eternal salvation unless you repent (confess your sin and turn from it).
“Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, envy, murders, drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practice such things will not inherit the kingdom of God.” Galatians 5:19-21