"Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body."
Holy Bible, 1 Corinthians 6:18
Fornication is having sexual relations before marriage.
Society will tell you that it's okay to have sex before marriage, as long as you "love" your partner. This is a lie.
Whatever God commands: it is the truth and the way we are supposed to live. There are no options; God's commandments are to be obeyed; and those who rebel against them, they will perish in hell forever and ever.
Sex before marriage not only destroys your spiritual life, but it also destroys your body! God said that we also sin against our own body, when we fornicate! This is a dangerous sin. AIDS, depression, and much more, stems from fornication.