Then will there be inequality of love in Heaven? Will the heavenly love between those who were married on earth be greater in any way that the general love among all in Heaven?
Will those who had few or even no love in the present time thus be eternally short on love in heaven compared to others who enjoyed many loves on earth?
I can't think of a reason why that would be.
The Lord says that there are those who are eunuchs since birth, those who become eunuchs, and there are those who are eunuchs for the sake of the kingdom; i.e. there are those who have devoted themselves to life-long chastity and celibacy. Those many Faithful who were devoted to a life of celibacy and chastity are deprived of nothing; just as those who were married in this life are deprived of nothing.
Likewise, to those who fathered and bore children, the love between parent and child is not destroyed in the Age to Come, but this does not mean that the childless (whether by choice or circumstance) shall be deprived of anything in the Age to Come.
Nothing of our present time compares to the glory and beauty of the Coming Age; where all is made perfect in Christ. All that is good is made perfect; and all who lacked good shall receive perfect good.
Therefore I, having no children of my own, will not be deprived--but shall rejoice and share of the good of all those who did bear children; for all are in Christ, so the commandment "rejoice with those who rejoice" shall it not be be magnified? Could it be any other way? That the commandment which says "Do not envy" and the commandment that says "love one another even as I have loved you" and the commandment that says "rejoice with those who rejoice" shall reach teleos in the perfected glory of Christ in the Age to Come--where not only is there no envying but rather there is but rejoicing in the good of others--so that my brother's joy shall be my joy, and my joy shall be my sister's joy; and our joy shall be perfect in Christ. Do we not read the Apostle saying, "Make my joy complete by being of the same mind, having the same love, being in full accord and of one mind." (Philippians 2:2), if the Apostle desires his joy finding its teleos by the unity of will, love, and commonhood even among the Faithful here and now--how much greater is that joy when these things are eternally true?
We shall not be deprived of each other. And in each other--and we all in Christ--shall be of unspeakable, incomprehensible joy. Beholding what no eye has seen and no ear has heard.