short answer > first, take a look at yourself, in prayer, and make sure you do what our Father has you do.
In case anyone dares to get into how I analyze this >
l-o-n-g answer >
Well, "fornication" in the King James is used for a variety of sexually immoral actions, possibly what is while the person is not married. But maybe it can include adultery. Because it is used to mean a son having "his father's wife." (in 1 Corinthians 5:1)
So, how might it be Biblical for a man do divorce his wife because of "fornication"? Ones might say this means she is a prostitute while married and he finds out; maybe she has been for long before they marry and she tricked him into marrying her, having no intention of stopping her . . . profession. Well, that would be adultery, though, unless Jesus never consider them married, if that is possible . . . I am now considering.
Also, we have another possible deception item > the woman has fornicated, then tricked a man into thinking she is a virgin so he will marry her. You can read what is done about that, under the law of Moses > Deuteronomy 22:13-21. Again, I mean . . . I understand . . . this would be a problem if she on purpose betrayed him by deceiving him into thinking she is a virgin.
So, if we are new creatures in Jesus, but have fornicated in our past and have not tried to fool our spouses about this, I am satisfied that this would not be what Jesus means by "fornication" being grounds for divorce. But what if a person gets married but it is found out . . . proven . . . that the person had no intention of being faithful and no intention of sharing in love in marriage? Does that mean God knows they are not married, but that trickster, in truth, is committing fornication? This possibility just came to my mind . . . by the way.
What if this happened to me while I am a Christian? I actually have committed myself to my wife, really meant it between me and God, and we have been pronounced; but then comes the big surprise. I suppose Jesus might excuse me to divorce her.
But my number-one issue would be, how ever did I get here, when I should have been obeying how God is personally guiding me? Being with a willful faker could be very in-my-face proof of how I have not been hearing Jesus' voice; and I doubt if I am obeying how our Father guides us in His peace > Colossians 3:15 > He would not have guided me to her.
So, this could mean I am my own problem, so much more than she is. So, I might tell her it was more my fault than hers, and ask her if she would care to stay with me and we both could find out how to love and how to live in God's personal guiding. Among other things . . . because if I could so fool myself, I could just do the same thing, all over again with someone else, when with her I could seek God for real correction, learning how to love her with compassion while learning how to be reliably guided by God.
So, yeah I might be ok to get a divorce; but since I have her and such proof of my own character being more or less bogus, I could keep her to help me find out how to genuinely love.
In another way of saying it > how I really am in my character has had a lot to do with whom I can be attracted to and connect with, for marriage. So, in case I got married and then got proof in my face that I have a very self-deceptive ability, my first need would be to get real correction, and not take this problem out on someone who took advantage of me making myself so available.
Jesus expects me to love her, in any case, right? So, before I get to even thinking about divorce, I first need to trust God to have me truly loving her the way He desires. And discover how He personally guides me in His own peace, so this becomes what I am doing >
"And let the peace of God rule in your hearts, to which also you were called in one body; and be thankful." (Colossians 3:15)
And this will mean I am not first so ready to self-righteously condemn her. I myself must be submissive to how God personally guides me, all the time. And considering my track record in this, may be I do not need to be criticizing anyone else, too quickly. Being "faithful" (Ephesians 1:1) includes not having any relationships with things which are not with our Groom Jesus.
I must not have extramarital affairs with unforgiveness, "complaining and disputing" (Philippians 2:13-16), "lust of the eyes" (1 John 2:16), self-righteously criticizing others . . . or else I am cheating on Jesus our Groom.
And has Jesus divorced me for committing adultery against Him? Not to my knowledge > but He expects me to also be so forgiving, but indeed to get real correction so I am loving instead of having relationships with evil things.
So . . . possibly, whoever I have been able to marry while claiming to be a Christian, this could be my proof of how I have been, and now I need to get real correction with God and discover how He has me loving her and any and all people the way God wants.
"Husbands, love your wives and do not be bitter toward them." (Colossians 3:19)
So, in any case, I am never excused to have bitterness; and so definitely I am not allowed to have any bitterness effecting my decision making about my wife, or else I am committing adultery against our Groom Jesus, by having an affair with bitterness.
And so we are to relate faithfully with all our Christian family >
"Let all bitterness, wrath, anger, clamor, and evil speaking be put away from you, with all malice. And be kind to one another, tenderhearted, forgiving one another, even as God in Christ forgave you." (Ephesians 4:31-32)
So, we need to relate in God's love with various other Christians, not isolate ourselves with some one person for getting what we want. And if we are learning how to love as family, then, this can help us to get into the right way of marriage with our own spouses. So, in case I have fallen for only my own wife, in isolation trying to mainly just control and use her for what I want, she is not my problem. I need first to get with our Father and discover how He has me discover how to love, and . . . maybe practice on her . . . perhaps so I can find out how to love an impossible person, so then I can love any and all people the way . . . our Groom wants us to love.