Briefly - Man & Women were made for each other from the beginning as companions – not just lust
Matt 19 4 “Haven’t you read,” he replied, “that at the beginning the Creator ‘made them male and female,’ 5 and said, ‘For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh’? 6 So they are no longer two, but one flesh. Therefore what God has joined together, let no one separate.”
Leviticus 18:22 - You shall not lie with a male as with a woman; it is an abomination.
Yes: to stop fornication and committing ‘sin’ – it is better to marry – but not just marry anyone for ‘sex’ it’s a union of two people for each other. (obviously, the argument of ‘sin’ & ‘law’ or we are saved no matter what we do as long as we believe - depending on your views)
Mark 9:47 - And if your eye causes you to sin, gouge it out. It’s better to enter the Kingdom of God with only one eye than to have two eyes and be thrown into hell,
Matt 19:8 8 Jesus replied, “Moses permitted you to divorce your wives because your hearts were hard. But it was not this way from the beginning. 9 I tell you that anyone who divorces his wife, except for sexual immorality, and marries another woman commits adultery.”
Matthew 5:31-32
31 "It has been said, 'Anyone who divorces his wife must give her a certificate of divorce.'
[Jesus is not saying you shouldn’t marry or that you cant divorce]
Matt 5:17 - Jesus said: "Do not think that I have come to abolish the Law or the Prophets……
At ODDS
Luke 16:18 - "Anyone who divorces his wife and marries another woman commits adultery, and the man who marries a divorced woman commits adultery.
Conflict
There is some conflict - 1 Corinthians 7:39 - A wife is bound to her husband as long as he lives. But if her husband dies, she is free to be married to whom she wishes, only in the Lord.
[this would imply that you cannot divorce]
1 Corinthians 7:1 - "Now for the matters you wrote about: It is good for a man not to marry
[this goes against other teachings and against nature – hence so many issues in the church – also open for sin]
1 Corinthians 7:25 "Now about virgins: I have no command from the Lord, but I give a judgment as one who by the Lord's mercy is trustworthy 26 Because of the present crisis, I think that it is good for a man to remain as he is.
Arguably, polygamy is allowed – the prophets had many wife’s / concubines – nothing in the bible that says not allowed – albeit this is for another question.
Finally: Leviticus 18:22 - You shall not lie with a male as with a woman; it is an abomination.
[clearly you are allowed to lie with a woman – which has to be via marriage, otherwise you would be committing fornication]