The marriage bed is undefiled.
Sex between a husband and wife is good and proper.
Denying each other is what’s wrong.
Mary was already betrothed to Joseph. She was already his wife when the angel visited her.
This again?
Just another unBiblical idea made dogma.
But we are told we are to look to so-called church fathers for what Scripture means, while no less than Augustine taught that marital relations "cannot be effected without the ardour of lust," Heb. 13:4 notwithstanding, and which "carnal concupiscence" is the "daughter sin, and thus "whatever comes into being by natural birth is bound by original sin" " but which carnal concupiscence is "no longer accounted sin in the regenerate"(“On Marriage and Concupiscence: Book I, cp. 27; http://www.newadvent.org/fathers/15071.htm
Even more extreme is Jerome, who asserts on First Corinthians 7:
It is good, he says, for a man not to touch a woman. If it is good not to touch a woman, it is bad to touch one: for there is no opposite to goodness but badness. But if it be bad and the evil is pardoned, the reason for the concession is to prevent worse evil. (Against Jovinianus (Book I, v. 7)
And is another RC who compels Scripture to support his false doctrine:
this too we must observe, at least if we would faithfully follow the Hebrew, that while Scripture on the first, third, fourth, fifth, and sixth days relates that, having finished the works of each, “God saw that it was good,” on the second day it omitted this altogether, leaving us to understand that two is not a good number because it destroys unity, and prefigures the marriage compact. Hence it was that all the animals which Noah took into the ark by pairs were unclean. Odd numbers denote cleanness. St. Jerome, Against Jovinianus Book 1 http://www.ccel.org/ccel/schaff/npnf206.vi.vi.I.html
So much for 2 x 2 evangelism!
Then we have Tertullian, who argued that second marriage, having been freed from the first by death, "will have to be termed no other than a species of fornication,'' partly based on the reasoning that such involves desiring to marry a women out of sexual ardor. ''An Exhortation to Chastity,'' Chapter IX.—Second Marriage a Species of Adultery, Marriage Itself Impugned, as Akin to Adultery, ANF, v. 4, p. 84.]