**The Bible does say Mary was married to Joseph and that Jesus had brothers and sisters.**
The brothers and sisters you refer to were cousins.
They lived in a complex of small huts with a shared well and a shared fire pit.
They called each other “brother and sister” in faith. Haven’t you ever heard that in some of St. Paul’s readings at Mass?
What utter nonsense. The Greek word for cousin is anepsios and not once is it used for Jesus brothers or sisters. If they were Jesus cousins it would have been used as it is here.
Colossians 4:10 My fellow prisoner Aristarchus sends you his greetings, as does Mark, the cousin of Barnabas.
Surely you wouldn't claim the Holy Spirit made a mistake in what words He inspired to be written would you?
Yes brothers and sisters is a term which can mean brothers and sisters in faith. I know St. Paul has used it in that context and so have the priests at my church as well. That’s why you need to look at the context in which the terms are being used.
I do not rule out the possibility that Jesus’s bothers and sisters mentioned in the Bible could really be His cousins-—as some insist. But I doubt it and really it doesn’t matter in he final analysis. I am perfectly content reading the Bible as it is written-—not reading into the Bible or speculating on such matters.
Since Mary and Joseph were in fact a married couple, it is reasonable to assume they did what other married couples do. Physical intimacy between a husband and a wife is a precious gift from God, not a sin or an act of defilement. I see no reason why this gift would have been denied to Mary and Joseph. There is certainly no mention of this in the Bible. While I do concede the possibility of your theory (even though it just that-—a theory) could you EVER concede the possibility that Mary and Joseph consummated their marriage?