Unbiblical divorce followed by the ex-spouse's remarriage: the innocent party is free to remarry, but must do heart work first

Mike's short answer: technically yes, they are free to remarry. But the essential prior work is: (1) Coming to genuine terms with where they personally failed (not focusing on the other party's failures); (2) Arriving at genuine forgiveness of the former spouse; (3) Being in a place of godly readiness to enter a new marriage with a changed attitude. Without this inner work, remarriage risks repeating the same patterns that caused the first divorce. Mike references his teaching series for husbands and wives drawn from Scripture.