[gscc]

The Bible clearly states that Joseph did have union with Mary. 

22All this took place to fulfill what the Lord had said through the prophet: 23"The virgin will be with child and will give birth to a son, and they will call him Immanuel"—which means, "God with us."

 24When Joseph woke up, he did what the angel of the Lord had commanded him and took Mary home as his wife. 25But he had no union with her until she gave birth to a son. And he gave him the name Jesus.

[SoothingDave]

The Bible clearly states that Joseph did have union with Mary.

25But he had no union with her until she gave birth to a son.

You mean right after delivery, there in the stable?

SD

[Full Court]

I totally agree that Mary and Joseph knew each other in the Biblical sense. They had sex.