The Divorce Dilemma by John MacArthur
Everyone has their own opinion about divorce, including pastors. John MacArthur sticks to what Scripture says about the subject in this book.
In those instances where Scripture doesn't give a clear cut answer, MacArthur basis his response to divorce and remarriage on what the Word of God does say throughout the entire Bible, not just a particular passage to justify his ideas.
Overall, this is a great book for anyone looking for biblical guidance on divorce and remarriage. At the end of the book there is even a questions and answers section.