pete sez this:

as usual steve contributes nothing of merit to the discussion

...then pete sez this:

bill, you are quite correct that mary was only a virgin till she was married, after the birth of Christ.
just as an aside,the period of engagement was considered marriage of sorts ,so that a divorce was required to break the relationship.
I do know that the catholic theology says that mary was always virgin, and I presume that the mention of Jesus brothers in the gospels is cousins,but I speculate.
that is not my take, since matthew 1 v 24f implys ,it seems to me,that josephs sexual distance from his wife was only till Jesus was born.

Bwahahahahahaha! "Sexual distance"! Bwahahahahaha!