Will, welcome to the forums, first.
I think it would help to give us some more background as to how you got to the place you are in today - did you start off as a monogamous couple and you found out about poly, or did you know about your polyness before you met her?
I think that might go a ways towards giving us information that we can use to help you a bit.
In your last post you were talking about a woman who left you for a "drug dealer" - is this the same person?
"Listen, or your tongue will make you deaf." - Native American Proverb