I'll get you a full answer to your question later.
The intital, basic, answer is, if someone divorces their spouse and marries someone else that new "marriage" is considered a state of adultery. Jesus views the marriage bond as sacred. Mark 10:2-12
Sure, having an affair is adultery. But according to Jesus leaving your wife and marrying your affair partner does not undo the adultery. It's a perpetual state of adultery. No minister worth his salt would marry a couple under such conditions. But from what I gather, the elders in your husbands church seem to be missing their b@lls and would probably marry them.
Does God bless the mess started in sin? Generally not. Certainly not if your husband doesn't repent.
There might be a few exceptions. They have to do with your husband realizing his error and genuinely repenting from the heart, but reconciliation with you, would, at that time, be impossible (either you are remarried or simply refuse to reconcile). This is where it gets murky. God is always willing to forgive and heal. But, if reconcilitaiton is logistically impossible, and your husband is truly sorry, God can work to make beauty out of ashes.
The Protestant church teaches that the only legitmate grounds for divorce where you are free to re-marry are: 1. Adultery, 2. The abandonment of the unbelieving spouse. These are based on the exception clauses given by Jesus in the Gospel of Matthew and Paul's teaching in Corinthians.
The Catholics hold that marriage is for life and there is no divorce under any circumstances. They sneak it in, however, through annulment, claiming the marriage was invalid.
Do you know the old clause, when the minister says "If anyone has any reason to give why this couple cannot be lawfully wed, speak now or forever hold his peace."? That was to give people the public opportunity to say, "Excuse me, but this person had an affair and left his wife. There are no biblical grounds for him divorcing his wife, therefore as a minister of the Gospel, you shouldn't be marrying these people."
Hey...fly me in to step into their wedding ceremony. I'd love to say that. Hehehehehe.
