here is the example, from the book. under the heading of:
"If an unscriptural relationship is terminated, and one party never has had a legitimate marriage, is that person free to marry?"

"This question and the next one are very difficult questions to face. Situations can vary considerably. And no matter how thorough or meticulous we are in defining a valid marriage, new situations have a way of adding a twist we had not considered and must weigh carefully. In applying Scriptural principles to these situations, Christians have not always arrived at the same conclusions. When we face these questions in actual experience, therefore, we do best to draw from the wisdom of a spiritual brotherhood, rather than trusting personal conclusions alone. All that we do must be to the glory of God (I Corinthians 10:31). All we do must have the effect of edification in the brotherhood (Romans 15:2). All we do must be above reproach before a watching world (I Peter 2:12).

and later:


"There are, however, more factors to consider than one's strict marital status when determining how "free" one is to marry. Although a person may not be disqualified from marriage by a former marriage bond, he may have other bonds and obligations which make marriage inappropriate. Paul asks, "Know ye not that he which is joined to an harlot is one body? for two, saith he, shall be one flesh" (I Corinthians 6:16). Although the physical union is not a marriage bond, it is a physical bond. It is also an emotional bond. And it may be a procreative bond. THE MORE TANGLED THESE BONDS, THE MORE INAPPROPRIATE MARRIAGE WOULD BE.

Whuh? Who says? Who are you to make these assumptions/decisions?

These are the examples you asked for.

Michele