Say a man enters a marriage where he is continually denied sexual relations and intimacy for years. Sure, there are times they are close sexually. But in the norm it's cold and sexless.
The marriage that God ordained is one man and one woman for life that's the law of marriage from the beginning.
Matthew 19:3-8~"The Pharisees also came unto him, tempting him, and saying unto him, Is it lawful for a man to put away his wife for every cause? And he answered and said unto them, Have ye not read, that he which made them at the beginning made them male and female, And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh? Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder. They say unto him, Why did Moses then command to give a writing of divorcement, and to put her away? He saith unto them, Moses because of the hardness of your hearts suffered you to put away your wives: but from the beginning it was not so."
Jesus clearly said that what God has JOINED TOGETHER let not MAN put asunder. Now, the Pharisees asked him why
did Moses then give certain laws of commands concerning putting away one's WIFE ~Jesus said because of the hardness of your hearts
Moses allow them to do so. SO BEFORE sin entered this world God's will was NO DIVORCE PERIOD. Since the fall of man, every man is born with a heart unlike Adam and Eve had BEFORE the sin entered, since the fall, God gave ONLY one law for divorce and the remarry~the sin of fornication, which sin takes in MANY sexual sins, the list is long. Denying one's spouse of sex would be INCLUDED in fornication.
Women can have a sexual emotional affair
~if anyone believes otherwise, then WHY all the very explicit sexual romance books out on the world's market that women do read and fantasize/lust
The husband battles certain sins such as viewing things online. Eventually, he gives in to serious sin and gets certain sexual sins done to him at massage places.... Does this too many times.
Your sin is your on, NOT your wife's. Her sins do not justify your sins. You sin because you wanted to, let us be honest. Sin is in your members, and ONLY faith and the fear of God allows us to overcome sins that are IN US.
Can a cheater every marry again?
You both can be forgiven and make your marriage work, and even if it's too late, you BOTH can be forgiven.
The law of marriage per OT and NT is different between a man and women. A man CAN have more than one living wife at a times, as long as he does NOT take a woman with a LIVING Husband~ whereas, a woman CANNOT and still be free of adultery. I would say, biblically you CAN remarry a woman who DOES NOT have a living husband and not be sinning according to the word of God.
Jim Smoke who has counselled many divorcing and divorced people and who started up the divorce recovery workshops, advises 2-5 years after the divorce before dating again.
And in the meantime, what is a man suppose to do? Visit massage parlor, and look at porn? David did not wait very long to find him another wife ONCE Michal begin to despise David's Lordship over her and others and once she closed her legs. Read it beginning in 1st Samuel 18.