For many married couples, it is difficult to imagine Heaven separated from each other, not able to remain married for all eternity.
Yet, Jesus was very clear in his teaching about marriage in Heaven.
The children of this age marry and remarry;
but those who are deemed worthy to attain to the coming age
and to the resurrection of the dead
neither marry nor are given in marriage.
This might seem like a "lesser" type of existence, where we are no longer united with our spouse in Heaven.
However, this does not mean we won't be united with our spouse for eternity.
The Catechism of the Catholic Church describes Heaven as a place of "communion."
This perfect life with the Most Holy Trinity -- this communion of life and love with the Trinity, with the Virgin Mary, the angels and all the blessed -- is called "heaven." Heaven is the ultimate end and fulfillment of the deepest human longings, the state of supreme, definitive happiness.
Furthermore, all those in Heaven are united in a "city of God."
Those who are united with Christ will form the community of the redeemed, "the holy city" of God, "the Bride, the wife of the Lamb." She will not be wounded any longer by sin, stains, self-love, that destroy or wound the earthly community. The beatific vision, in which God opens himself in an inexhaustible way to the elect, will be the ever-flowing well-spring of happiness, peace, and mutual communion.
Heaven will be unlike any experience of communion we encounter on earth, surpassing even the happiest times of married life on earth.
If both husband and wife strive for holiness on earth and enter into the eternal bliss of Heaven, they will be united in Heaven in a way that is beyond our understanding. It won't look like marriage on earth, as we will be united with all the saints in Heaven in an eternal communion of love, bound together by God himself.
The loss of married life will not be an issue for any of us, as we will gain a reward far greater than we could possibly imagine.
Marriage is a pathway that is designed to help us on our way to Heaven and once we are finally to our destination, there will no longer be a need to hold onto it.