Friendship is very important in Mormonism.  So is brotherhood and sisterhood.  We know these relationships have eternal significance:

And that same sociality which exists among us here will exist among us there.

But unlike other relationships that have eternal significance, husbands and wives, parents and children, relationships to Christ, these relationships aren’t sealed, don’t have any rituals for them, and barely even exist formally.  Some of them have a kind of temporal institutional existence in the quorum and the Relief Society, but that’s as far as it goes.  (As above, so below: Western society also lacks any high recognition of friendship as a distinct kind of relationship.)

The scriptures call us Christ’s children, his servants, his friends, even his brother.  But the only relationships we have with him that is arguably ritually validated in priesthood ordinances are the relationships of agents and the relationship of identity.  We “take his name upon us,” meaning that we act for him and, in a sense, are him.

It may be significant that we do not have a formal relationship role for the Holy Ghost in the Godhead.  The Father is a father, the Son is a son and the Holy Ghost is . . . .  It may also be significant that the Holy Ghost is involved in creating soul-to-soul human connections outside the bonds of the sealing power.

Many Mormons believe that in the pre-existence we formed connections with other individuals that led us to becoming family in this life.  Who knows what unimaginable heavenly relationships we may not be choosing now.