In the beginning, the first man Adam was given a helper to help him.
Gen 2:18 And the LORD God said, It is not good that the man should be alone: I will make him a help meet for him.
Gen 2:19 And out of the ground the LORD God formed every beast of the field, and every fowl of the air, and brought them to Adam to see what he would call them; and whatsoever Adam called every living creature, that was its name.
Gen 2:20 And Adam gave names to all cattle, and to the fowls of the air, and to every beast of the field: but for Adam there was not found a help meet for him.
Gen 2:21 And the LORD God caused a deep sleep to fall upon Adam, and he slept; and he took one of his ribs, and closed up the flesh in its place.
Gen 2:22 And the rib, which the LORD God had taken from man, he made woman, and brought her to the man.
With this man & woman relationship comes the idea of the term soul mate among lovers, derived may be from the fact that the formed man from the dust of the ground when breathed into the nostrils became a living soul.
Gen 2:7 And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul.
Although the word "soul" and "mate" have been frequently used in the Bible, there is no way that the soul has a mate because they are spirit with no flesh & bones, like the Angels of God.
Mt 22:30 For in the resurrection they neither marry, nor are given in marriage, but are as the angels of God in heaven.
Lk 24:39 Behold my hands and my feet, that it is I myself: handle me, and see; for a spirit hath not flesh and bones, as ye see me have.
But if "soul mate" is biblically true, everyone should have a wife or a mate, but it is not always the case like Saint Paul who remained unmarried, same with our Lord Jesus and His other ministers like Titus and Timothy who were single according to the Bible.
1 Cor 7:8 I say therefore to the unmarried and widows, It is good for them if they remain even as I.
The commandment is go ye and multiply so that helpers called as slaves or maids are not exempted to procreate.
Gen 30:9 When Leah saw that she had left bearing, she took Zilpah, her maid, and gave her Jacob for a wife.
Gen 30:10 And Zilpah, Leah's maid, bore Jacob a son.
But in this present situation where population growth is still increasing, it is good for a man not to touch a woman.
1 Cor 7:9 But if they cannot contain, let them marry: for it is better to marry than to burn.
1 Cor 7:29 But this I say, brethren, The time is short. It remaineth, that both they that have wives, be as though they had none;
I mean, today, you dare touch your maid and you're a rapist or maybe a simple case of sexual harassment or malicious mischief.Why the change in dealings with women as a wife?
Heb 7:11 If therefore perfection were by the Levitical priesthood (for under it the people received the law) what further need was there that another priest should rise after the order of Melchisedec, and not be called after the order of Aaron?
Heb 7:12 For the priesthood being changed, there is made of necessity a change also of the law.
Lk 16:16 The law and the prophets were until John: since that time the kingdom of God is preached, and every man presseth into it.
But Jesus, because he continueth ever, hath an unchangeable priesthood. And by the Apostles who by the inspiration of the holy spirit, made a new law.
1 Tim 3:2 A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behavior, given to hospitality, apt to teach;