Purity

The sacred powers of procreation are to be employed only between man and woman, lawfully wedded as husband  and wife.physical intimacy between husband and wife is sacred. It is ordained of God for the creation of children .God has commanded that sexual intimacy be reserved for marriage.

When you are sexually pure, you prepare yourself to make and keep sacred covenants in the temple. You prepare yourself to build a strong marriage and to bring children into the world as part of an eternal and loving family. You protect yourself from the spiritual and emotional damage that come from sharing sexual intimacy outside of marriage. You also protect yourself from harmful diseases. Remaining sexually pure helps you to be confident and truly happy and improves your ability to make good decisions now and in the future.
The Lord’s standard regarding sexual purity is clear and unchanging. Do not have any sexual relations before marriage, and be completely faithful to your spouse after marriage. Do not allow the media, your peers, or others to persuade you that sexual intimacy before marriage is acceptable. It is not. In God’s sight, sexual sins are extremely serious. They defile the sacred power God has given us to create life.