I do not find that to be true.
Paul stated God never called angels "sons of God", they are created only to assist in our salvation.
Explain why an immortal spirit, that can inhabit a human body, has no need for air, water or food to live and were not, according to Christ, created to reproduce or with "equipment" to do so, would find human women desirable and take them as wives? Think about the problems we as humans have with marriage.
Stop and think about all that means --- food, housing, protection, caring for children -- why would a spirit that needs none of that -- take on those problems -- for sex????
Do you understand why humans desire and enjoy sex? simple because we are created with a hormone system that brings pleasure chemically.
spirit has no chemicals, no hormonal system
It is true because the bible says so.
The great dragon was hurled down—that ancient serpent called the devil, or Satan, who leads the whole world astray.
He was hurled to the earth, and his angels with him. (Rev. 12:9, NIV)
So the great dragon was cast out, that serpent of old, called the Devil and Satan, who deceives the whole world;
he was cast to the earth, and his angels were cast out with him (Rev. 12:9, NKJV)
One day the
angels came to present themselves before the Lord, and Satan also came with them. The Lord said to Satan, “Where have you come from?” Satan answered the Lord, “
From roaming throughout the earth, going back and forth on it.” (Job 1:6-7, NIV)
Now there was a day when
the sons of God came to present themselves before the Lord, and Satan also came among them. And the Lord said to Satan, “From where do you come?”So Satan answered the Lord and said, “
From going to and fro on the earth, and from walking back and forth on it.” (Job 1:6-7, NKJV)
Children of God in the NT refer to believers adopted as co-heirs with Christ through the Holy Spirit, that does NOT exist in the OT, therefore it is utterly erroneous to apply this definition to any mentions of "sons of God" in the OT. "Sons of God" are evil spirits, they're with Satan according to Job 1:6, and they're subject for judgement according to Ps. 82:6.
For as many as are led by the Spirit of God, these are sons of God. For you did not receive the spirit of bondage again to fear, but you received the Spirit of adoption by whom we cry out, “Abba, Father.” (Rom. 8:14)
Lastly, spirits may not be able to desire and enjoy sex, but men do. Angels do not appear as voices in your head, but men in flesh and blood.
Then the Lord appeared to him by the terebinth trees of Mamre, as he was sitting in the tent door in the heat of the day. So he lifted his eyes and looked, and
behold, three men were standing by him; and when he saw
them, he ran from the tent door to meet them ...(Gen. 18:1-2)
Now the
two angels came to Sodom in the evening, and Lot was sitting in the gate of Sodom. (Gen. 19:1)
And they called to Lot and said to him, “Where are the men who came to you tonight? Bring them out to us that
we may know them carnally.” (Gen. 19:5)
Dismissing angels as spiritual beings with no physiological needs, and can't have sex is a misinterpretation of Matt. 22:30, which only applies to the resurrection and heaven; however, on earth, mating is not only possible but it's the norm. Jesus specifically dropped a reference of Noah's days, and if you let the scripture interpret itself, the only mention of Noah's days is Gen. 6, where sons of God mated with daughters of men.
For
in the resurrection they neither marry nor are given in marriage, but are like
angels of God in heaven. (Matt. 22:30)
For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark. (Matt. 24:38)