I don't understand this mindset either. This is just one of many, many issues Mormon's do not understand about Jesus and the Bible, you just have been taught wrong.
Did you know - and please have an open mind -
Jesus came to redefine the term family. Remember when he asked, "who is my mother and brothers?" He answered himself with, "they who do my Father's will are my mother, brothers and sisters".
That's the redefining moment, we should not only love our spouses, blood relatives, children - but in the same manner, we love those in Christ. We are all adopted into the family of God. We are one family, there are no spouses in heaven, no aunts, no uncles - we all share one another equally because we are the Body of Christ. We edify one another - all of us together as One.
There is no separation as the Body, you are trying to separate it into "family units", this is a natural human concept and you are thinking with a natural mind, not a spiritual mindset.