In my experience, there are times when a Dominant and submissive have related so completely in a D/s context, that when revisiting that relationship, it is very easy to slide back into those roles. As such, if my sub were engaging in a relationship such as that, reacting to another woman with respect to her Dominance as opposed to freindship, I would not want there to be further contact.

It has NOTHING to do with trust, rather than the tendency for human beings to establish a pattern of how they interact with others and maintain that pattern even after those elements of the relationship have been removed.

This sort of behavior could feasibly interfere with some of the D/s aspects of our relationship.

Gary, if she is reflecting openly on Master Bill, I am assuming, as it sounds like you are, that there is more to her thinking than just what's meets the eye.

Perhaps, in terms of semantics, "forbid" seems a strong word. However, if I feel it is necessary and healthy for our relationship, I will "forbid" things, including interaction and levels of interaction.

Again, my views should not indicate a lack of trust in my submissive.
However, if he cannot except my directions unconditionally when it is necessary to be so firm, where is his trust in Me?

You cannot throw stones about the issue of trust. If you truly trust your Dominant, then you must trust that there are times when you may not have a choice. Or at least, that is how D/s is interprated and understood in my life. If that is not acceptable to a potential submissive, then they will not be my submissive.

However, in terms of contact with previous lovers and Dommes, if I were to forbid all contact with all previous lovers and Dommes, yes, that would indicate a certain lack of confidence in O/our relationship. On a case by case basis, I am merely suggesting that there may be times when this sort of action might be necessary.

Fortunately, my guy and I have had no problems in this arena, that of trust and language. We do communicate openly and teh likelihood that I would have to forbid contact is slim, because he is more likely to ask Me what I want him to do in said situations and in so doing, be willing to accept and predict My decision.