There is one serious problem with this. It is not true. And, unsurprisingly, in being false, it is an observably and intrinsically anti-Biblical concept.
Let's look at the greatest men of God, as seen in the Bible. Was Elijah a chick magnet? Were women constantly cooing over Elisha's bald pate? Did Jeremiah or Isaiah find it difficult to prophesy due to the women they were constantly having to fend off with their staffs? Sure, there was the whole rolling in filth thing, but then, personal uncleanliness didn't slow down the hippie chicks in the Sixties. Solomon had a vast and plentiful harem, but then, he was a king and a rich one at that. Hosea only married a prostitute at God's behest. Joseph was highly attractive to Potiphar's wife, but she was not a woman of God and it was clearly not his godliness that got her all hot and bothered.
Of course, that's all Old Testament. Is it any different in the New Testament? Not at all. The Apostle Paul never married, nor, insofar as we can tell, did
Jesus did draw in women by the droves, but then, he drew even more men to him as well. And while Herodias hated John the Baptist, there is no indication she hated him for spurning her rather than the threat he posed to her status as her uncle's wife.
So much for the Bible. Now let's observe the real world. Are sincerely religious men the objects of female fantasy? Not so much. On the basis of this metric, it is pretty clear that the sort of men women find most attractive are a) youthful billionaires b) vampires, and c) movie stars. Not only are missionaries, priests, and pastors conspicuously missing from the romance novels and chick flicks of the world, but the actual objects of female desire are notoriously immoral and unholy.
Now, this does not mean that Christian women don't want a godly husband who does genuinely love Jesus Christ. But this desire is relationship desire, not sexual attraction, as outlined previously in the logical fallacy of female attraction. And it also doesn't mean that the Christian man should not put Jesus Christ first in his life. It merely means that he should not expect his devotion to God to attract women in the same way that perfectly chiseled features, well-honed muscles, stylish clothes, social status, and irrational self-confidence do.
Christian women do find Christian men with strong faith to be attractive. But it is simply false to believe that they do so because of the strength of the man's faith, or even because of his faith. A woman follows because an attractive man leads her, not because she approves of his destination.