Well, you're the one asking what Heaven will be like. All any can do is take what little we have concerning Heaven in the Scripture and try and develop some ideas.It is not for us to say whether or not there should be relationships in heaven, that is up to God. What we are doing in the post is not looking for things we may like to see but what scripture tells us Heaven will be like.
God doesn't tell us everything, but he does tell us quite a bit about heaven, directly and indirectly. The fact He tells us in part means to me, He wants us to explore the Word, He wants us to have a glimpse, have something to really look forward to.
There will not be relationships, as we have noted from scripture already, in heaven there will not be men or woman as now, there will not be Jews or Greeks as now, ALL things are made new.
You ask will we have genitals? I guess there are few ways to consider this.
- If we are recreated, made new, why would be have them if we do not need them
- Adam had them you may say, he had them before the fall. True but that was the first creation of man, which was to reproduce and fill the earth. God knows how many people will be in Heaven, He calls us we do not call Him, so when there are enough people and our Lord returns for His one true church, ad returns to defeat the devil, when the New Heaven and New earth are created, and we get our resurrected bodies, we are made new, as the same people, but we will not have sex, so do not need those parts, Adam had them because he and Eve would need them, for a husband and wife relationship, in this life, in heaven we won't need them. Only the Lord knows if we will have them.
Other than the consideration just mentioned I think it is best to say, we don't know, but we know someone who does. ;o)
Regarding seeing Mary, she will be there, I also listed Abraham, Isaac, Jacob and others, I didn't say we would recognise them but it may be best to say we could meet them. The way these people talk will be different to how we talk, and a different language, from memory I am sure I went on to mention that and comment how will we understand each other. I then referred to Pentecost adding scripture and also to the fact there was only one language until Babel. To be honest we do not need to look deep the answer is on the surface, we will be in the New Heaven and New Earth, in perfect peace, in the Grace and Love of God, in the Light of God which will shine 24 hours a day, with Jesus and with all saved souls.
Scripture is clear that sex is not just about pro-creation. See again (Gen. 18:12) Plus, why would we not have a sexual appetite when we will have a food appetite? Didn't the resurrected Christ eat fish with the disciples? (Luke 24:40-43)
Do you think men and women having sex is wrong? Was it, and is it not a spiritual thing? Why do you say, we are not looking for things we may like to see?
I don't believe you. We are men and women because that is what God made us to be. We are not some sort of neutered creatures. Thus there will be relationships, I believe, in Heaven. Don't ask me how it will be, as I said, I don't know. But that it will be, I do believe.
Well, you say we will not have genitals in Heaven. Because as you say, they are for procreation only. That is strange since I showed you they are for pleasure also. What is wrong with that when in accordance with God? And, if Jesus Christ ate fish and honey, will He be required to go to the bathroom? Will we? How...if we don't have genitals?
Yes, I believe Mary will be there. And, she will be a woman. Is that a surprise? Abraham will be a man. What a bulliten. Your description of us in heaven is not of resurrected humans. It is of some other order of beings.