Will there be sex in heaven? What will the roles of men and women who have husbands  and wives in heaven be? Will they still be married?
Like the Angels
Jesus addressed this question when the Sadducees asked him about whether there will still be marriages in heaven and whether they will still be married. One thing that I learned is that the Sadducees did not believe in the resurrection but the Pharisees did. There is an easy way to remember who did and who did not believe in the resurrection among the religious leaders. The Sadducees did not and so they were “sad, you see” but the Pharisees did because they could see “far, you see.” I know it sounds silly, but it helps me to remember who believed and who didn’t believe in the resurrection.
The Sadducees were trying to trick Jesus when they asked, “Teacher,” they said, “Moses told us that if a man dies without having children, his brother must marry the widow and have children for him. Now there were seven brothers among us. The first one married and died, and since he had no children, he left his wife to his brother. The same thing happened to the second and third brother, right on down to the seventh. Finally, the woman died. Now then, at the resurrection, whose wife will she be of the seven, since all of them were married to her” (Matthew 12:19-23)? What did Jesus say? He stated that, “At the resurrection people will neither marry nor be given in marriage; they will be like the angels in heaven” (Matthew 12:25). This does not mean that we will have wings like the angels for not all angels have wings. This means that there will be neither marriages of one to another or that they will procreate (have children). The angels also do not marry nor do they bear children. Jesus said in Mark 12:25 that “When the dead rise, they will neither marry nor be given in marriage; they will be like the angels in heaven.” Jesus actually rebuked the Sadducees saying, “Are you not in error because you do not know the Scriptures or the power of God” (Mark 12:24)?
No Need for Sex in Heaven
There is not going to be any sex in the Kingdom of Heaven because those who have put their trust in Christ on earth will live forever. There will be no need to replenish the human race because eternal life means that the death rate on earth at present (being 100% or 10 out of every 10 humans die) will not be like the death rate in heaven (being 0 out of 10 will die). Sex was created by God to bond male and females together as one in a relationship that is like that of Christ and His Bride, the church. The church has become one with Christ. Sex is also made for procreation (having children) but it is a way of having two people, male and female, come together i n the most intimate relationship  possible. Two people become one in unity, family, and harmony and their DNA creates one child at a time (save for twins or more). This unique gift from God is designed only for those who have made lifetime commitments to one another. In Genesis 2:24 is says, “For this reason a man will leave his father and mother and be united to his wife, and they will become one flesh.”
Jesus said as much when He stated that “at the beginning of creation God ‘made them male and female. For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh.’ So they are no longer two, but one. Therefore what God has joined together, let man not separate” (Mark 10:6-9). Today, the church and Christ become one and what God had joined together, stays together. That is the intent of marriage. “Till death do us part” is in most marriage ceremonies but sadly, it is “until disagreement makes us part.” This is why parents of the couple must stay out of their children’s marriages and perhaps is the reason why God said, in Genesis 2:24, “For this reason a man will leave his father and mother and be united to his wife, and they will become one flesh” (my emphasis). They leave their old families behind to create a new family. I do not mean that they distance themselves or cut off the relationship from their families but that relationship stops at the threshold of the new couple’s door.
Better Than Sex
God created sex for married couples to enjoy but in heaven, there will be no greater joy than to be in the presence of God. What a day that will be and there will be nothing on this earth to compare with it. That is why Paul said, “I consider that our present sufferings are not worth comparing with the glory that will be revealed in us” (Romans 8:18). The joy is indescribable even to Paul who was taught directly by Jesus Christ. Paul said that “Now we see but a poor reflection as in a mirror; then we shall see face to face. Now I know in part; then I shall know fully, even as I am fully known” (1 Corinthians 13:12). The Apostle John had a foretaste of this when he wrote, “Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when he appears, we shall be like him, for we shall see him as he is” (1 John 3:2).
The Roles of Men and Women in Heaven
Men and women are co-equals and co-heirs in Christ today and in the Kingdom of Heaven they will be ruling with Christ as kings and priests. That indicates that we shall be ruling and reigning with Christ. The capacity and responsibilities will not be due to our being male or female but due to what we have done on this earth. Jesus said that some will rule five cities, some may rule ten cities, but our responsibilities will be in direct proportion to what we have done with out talents, time, and treasure here on earth (Luke 19). In Revelation 5:10 it states that at His return, He “made them to be a kingdom and priests to serve our God, and they will reign on the earth”, “and has made us to be a kingdom and priests to serve his God and Father–to him be glory and power for ever and ever! Amen” (Revelation 1:6).
God is no respecter of persons between men or women (Acts 10:34) because, “There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus” (Galatians 3:28). Men will not be the head of women in heaven. He and she will both be ruling together but in different capacities according to what they have done on earth. We are not saved by works but our works will follow us to heaven and each man and woman will be rewarded according to what they have done on earth for the Lord. Today, if you have not placed your trust in Christ, you will not be in heaven but be eternally separated from God with no second chance. Today is your day of salvation (2 Corinthians 6:2) for no one is guaranteed that they will live beyond tonight or tomorrow. Come to Jesus  today, repent of your sins, confess them to God, and put your trust in Jesus Christ. Then you can join the other saints in ruling and reigning with Christ in the Kingdom of Heaven. That will be better than any marriage or sexual relationship that has ever been consummated.
Take a look at this related article about Heaven
Resource – New International Version Bible, The Holy Bible, New International Version®, NIV® Copyright© 1973, 1978, 1984, 2011 by Biblca, Inc.™ Used by permission. All rights reserved worldwide. YouTube “When we all get to Heaven” by Gaither Gospel Group