OK.
We believe that God the Father is the physical father of Jesus Christ. “Only Begotten” rather demands this. We do NOT believe that God the Father had to have sexual intercourse with Mary to accomplish this.
In fact, it has been pointed out that because of the Book of Mormon, we are about the only group that believes in the divine nature of Christ who HAS to believe that Mary was a virgin at His birth.
It seems that the original Hebrew word that the KJV has translated as ‘virgin’ may well mean “woman of royal birth,” not “woman who has never had sex.” There is some wiggle room, in other words, for most people.
But not us.
Why?
Because of the Book of Mormon, where it talks about a vision in which a young virgin would give birth to the savior…using that English word, ‘virgin.’
If Joseph Smith was translating that with divine aid, one can assume that a word as important as that one wouldn’t be translated as ‘virgin’ in the English sense (woman who has never had sex). It would have been translated as “woman of a royal house” or “woman of royal birth.”
However, there is this trinitarian issue–or rather, a modalist issue to be argued against here; there were a bunch of people arguing that it was the Holy Ghost (or rather, God wearing that ‘mask’ or persona) who was the father of Christ.
Because we emphasize the individual natures of the Members of the Godhead…as three Individuals who share a common purpose and intent–and that “something:” “God,” --it is very important to us to understand that while this conception was done with the aid of the Holy Ghost, it is God the Father Who is the Father of Jesus Christ, and the Holy Ghost is not.
I repeat; it is a trinitarian issue, not a prurient one.