But she was still a virgin in that she did not know a man, IOW, she had never had sex. Telling them they are not virgins even when they maintained their moral integrity and waited until marriage for sex is an insult to them.
The classic definition of virginity does a disservice to women who, for some reason or other, have their hymen ruptured although they never had sex. It's not their choice that that happened cause no woman is going to do it intentionally.
Mary didn't have sex with anyone but Joseph and therefore he still had the privilege of being the first and only.
Then there's the ridiculous stories I've heard coming from muslim countries of women who have surgery to make them "virgins" again for a second husband, which is ludicrous. They've had sex before and surgically altering that does not change THAT fact.
Mary had several children after she carried Jesus. When the Angel told Joseph to not hesitate to take Mary as his wife though she carried the Holy On of God, he could not have known all the vagaries of the process. He would not have known the means by which God placed Jesus in Mary’s uterus, but if he believed God, and the indications are that he did, then he would have relied upon the INTEGRITY of God that Mary was still a virgin. The Bible tells us that he knew her not until after the brith of Jesus. Joseph had every expectation of Mary’s virginal status when he married her and I believe when he consummate their marriage vows. Hence, God di not defraud Joseph in the conception of Jesus nor the birth of Jesus. I choose to believe this because it fits the Character of My God who would not defraud Joseph, did not defraud Joseph in the conceptuion of Jesus, either.
The arrival of Jesus is not about sex. God did not —as Mormons teach, blasphemously— have sex with Mary to conceive Jesus in her womb. The arrival of God among us is miraculous, completely miraculous, for God became a man and dwelt among us. In such a sacred gift God would not defraud Joseph. Just as Jesus would not violate the Passover Seder on the night before the Cross by serving real blood to His disciples.