Since a major component of the gospel is the concept of eternal marriage, Latter-day Saints are encouraged to only date and marry faithful members of the Church.This is because only faithful members of the Church can enter a holy temple and be married for time and all eternity.However, although courtship patterns change and vary across cultures, there is quite a conservative pattern for dating and courtship among Latter-day Saints in Western nations.It is expected that LDS youth will not begin dating until the age of sixteen.In other words, Latter-day Saints believe that when two people enter into temple marriage (i.e., eternal marriage) and are faithful to their covenants, then they will rise in the resurrection as a married couple and live together forever in the married state.
This is a major reason why people get hurt, and why there's heartache.
Long, passionate kissing definitely should be avoided.
And French kissing is out--it's purpose is to be passionate and suggestive, not to express pure affection (plus, the stuff with the tongues just seems tacky, in my opinion).
Sexuality has a prominent role within the theology of Mormonism, including that of The Church of Jesus Christ of Latter-day Saints (LDS Church).
The church teaches that gender is defined in the premortal existence, and that part of the purpose of mortal life is for men and women to be sealed together, forming bonds that allow them to progress eternally together in the afterlife.