Divorce isn't love. Unconditional love is not broken by any setbacks. Divorce is based on conditional "love". True love says that they will be there under all circumstances and bounds which only death can separate. Conditional "love" says, IF you do this or do that, I will leave you. And the minute you put conditions on a marriage that is the beginning of its failure. I don't care if your seperated for 10-20 years, if they're in a prison cell, in a ward, takes hundreds of hours of counseling or therapy, you still love your spouse enough to care about them and not abandon them, and for the sake of the children. your spouse will see that love and eventually see the err of their ways by your love and piety. Even the epistle of Peter says that unbelieving spouses can be won by the behavior of their wives through their modesty, submissiveness, humility, and piety..
Wives, in the same way be submissive to your husbands so that, if any of them do not believe the word, they may be won over without words by the behavior of their wives, - 1 Peter 3:1
as I said before in cases of abuse, separation is needed. But never abandonment.love does not abandon.it goes through thick and thin.