This argument that Jesus wasn't married is a big problem as far as Mormonism is concerned. Temple marriage is a requirement for eternal life.
John 5
19 Then answered Jesus and said unto them, Verily, verily, I say unto you, The Son can do nothing of himself, but what he seeth the Father do:
for what things soever he doeth, these also doeth the Son likewise.
"Celestial marriage allows God's children to advance and progress and become like him."
Achieving a Celestial Marriage Student Manual, p. 65
There is no Heavenly Mother in LDS scripture, but the First Presidency teaches it. Mormons like to quote 1 Corinthians 11:11 to justify eternal marriage.
1 Corinthians 11
11 Nevertheless neither is the man without the woman, neither the woman without the man, in the Lord.
"The fullness and blessings of the Priesthood and Gospel grow out of Celestial marriage. This is the crowning ordinance of the Gospel and crowning ordinance of the temple.
"I want to plead to my good brethren and sisters, good members of the Church, to go to the temple to be married for time and all eternity.
12
"In contrast to the practices of the world, marriage endures forever in the gospel plan.
"Marriage is considered by a great many people as merely a civil contract or agreement between a man and a woman that they will live together in the marriage relation. It is, in fact, an eternal principle upon which the very existence of mankind depends. The Lord gave this law to man in the very beginning of the world as part of the Gospel law, and the first marriage was to endure forever. According to the law of the Lord every marriage should endure forever. If all mankind would live in strict obedience to the Gospel and in that love which is begotten by the Spirit of the Lord, all marriages would be eternal." …
“Chapter 15: Eternal Marriage,” Teachings of Presidents of the Church: Joseph Fielding Smith (2013), 191–202
https://www.lds.org/manual/teaching...ng-smith/chapter-15-eternal-marriage?lang=eng
By definition, exaltation includes the ability to procreate the family unit throughout eternity. This our Father in heaven has power to do. His marriage partner is our mother in heaven. We are their spirit children, born to them in the bonds of celestial marriage.
The Lord would have all his children attain exaltation, but men must have their agency. Only those who subscribe by ordinance and by faithful adherence to covenant are worthy of “a continuation of seeds forever and ever.” (D&C 132:19.)
GOD IS NOW AN EXALTED MAN WITH POWERS OF ETERNAL INCREASE
Our Father in Heaven Lives in an Exalted Marriage Relationship
“No matter to what heights God has attained or may attain, he does not stand alone; for side by side with him, in all her glory, a glory like unto his, stands a companion, the Mother of his children. For as we have a Father in heaven, so also we have a Mother there, a glorified, exalted, ennobled Mother.” (Melvin J. Ballard, as quoted in Bryant S. Hinckley, Sermons and Missionary Services of Melvin J. Ballard, pp. 205-6.)
LDS Achieving a Celestial Marriage Student Manual (p. 129)
ONLY THROUGH CELESTIAL MARRIAGE CAN A PERSON BECOME LIKE GOD
(Ibid, p. 131)