Thank you for posting what I wanted to. Joseph was a widower and Mary took a vow of virginity. In Jewish culture this was customary. Though the age gap might have been wide there was no sexually inappropriate behavior that took place (according to the Bible) and the Church. Even someone who's non-Christian would have to take the historical elements of its story at face value and the historical accounts with some degree of veracity. Christians (most regardless of denomination) would unanimously agree that Joseph and Mary's relationship was never marked once by sexual intimacy.