So according to some Christians and churches there will be no sex or showing affection in heaven. There will be male and female, but the genitals will not be used. We will eat and drink, so we can taste and feel, but no desire for physical attraction. Even though they have never seen heaven and we are told very little about it. They have already decided what you can and cannot do in heaven.
Gal 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
1Co 15:44 It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body.
Mat 22:28 Therefore in the resurrection whose wife shall she be of the seven? for they all had her.
Mat 22:29 Jesus answered and said unto them, Ye do err, not knowing the scriptures, nor the power of God.
Mat 22:30 For in the resurrection they neither marry, nor are given in marriage, but are as the angels of God in heaven.
The only thing that separates a man and a woman is the flesh but the spirit, and soul, are the same.
When they put off the flesh and have a glorified body they are the same with no gender.
That is why Jesus said they do not marry, and are as the angels which does not mean they are an angel but they have no gender like the angels.
Angels always have masculine names because there is no gender, and they are greater than humans.
There is no sex in heaven for it is spiritual, and sex only applies to the physical.
The saints will be spiritual not physical.
Isa 65:17 For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.
2Pe 3:13 Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.
When the saints are at the New Jerusalem they will remember nothing prior to that, and will not remember the earth, or anything associated with it.
You can be standing next to your wife and you will not know it is her for if you did then you would remember the earth, but you will remember nothing prior to the New Jerusalem same as the angels.
For people that think they will reunite with their husband or wife it will not happen.
It will be a place where sin has never been, and sin will never be.