"Those who are considered worthy of taking part in the age to come and in the resurrection from the dead will neither marry nor be given in marriage." (Luke 20:35)On that day, our longing for union will not be jettisoned--it will be fulfilled. The mystery of marriage is merely an earthly sign of the heavenly reality. When we are in heaven, we will no longer need signs. The "marriage feast of the Lamb" (Rev 19:7)--the union of love we all seek--will be consummated. All who are bound to Christ will be bound to one another, forming the community of the redeemed, the holy city of God, the Bride of the Lamb, who is Christ. The miracle of becoming one flesh that husband and wife experience on earth is a foreshadowing of this (Eph 5:31-32). For us, this will be a completely new experience, but it will also bear a recognizable resemblance to the deep, intimate, child-producing union experienced by husband and wife in this life.
h/t Christopher West's website dedicated to Pope John Paul II's "Theology of the Body." See the article "What is the Theology of the Body & Why is it Changing so Many Lives?"