It takes an unscriptural attitude for one Christian to divorce another for selfish reasons. The world is full of unbiblical rationalization. "You adulteresses, do you not know that friendship with the world is hostility toward God" (Jas 4:4)? What if a marriage partner does leave? "'The land commits flagrant harlotry, forsaking the Lord" (Hos 1:2). In Jesus' case "many of His disciples withdrew and were not walking with Him anymore" (Jn 6:66). "They went out from us, but were not really of us; for if they had been of us, they would no doubt have remained with us" (1Jn 2:19). It is a matter of faith, for those who left are ones "who did not believe" (Jn 6:64). But is leaving a valid option for a Christian? Malachi 2:15 says that one does not behave like that if he has the Spirit.
The result is that the divorce does away with the contract altogether. It's finalized, so when God said "I hate divorce" (Mal 2:16) he wasn't just saying that you can adulterate marriage but you can't destroy it. "She is not my wife, and I am not her husband" (Hos 2:2). It is based upon faith so "let no one deal treacherously against the wife of your youth" (Mal 2:15). Verse 16 warns "take heed to your spirit, that you do not deal treacherously." This proves that destroying a marriage is possible."