Please check your private message above for information that may be of some help to you. You may have cause in regards to the joint business you posted above and any monies owed you; an attorney would need to review any business agreements, contracts, etc. to determine whether or not that is the case. If he's in fact profiting from the clients in your previous jointly owned business, that might be something to pursue. (Just an example.) If you jointly signed on the home and are currently in title, you are entitled to an equal share of the proceeds upon the sale. (Another example.) You didn't post much about that particular aspect; I'm only using it as an illustration here.

Unfortunately, most US courts don't recognize debts within a cohabitation (unmarried state) unless of course, he borrowed monies from you and neglected to pay it back. That would possibly involve a small claims issue .. and again, an attorney might be of more help with the actual facts, documents, etc. in front of him/her. There's no real "division of assets" in that type of situation; you won't have much luck pursuing that avenue simply by virtue that you weren't married. That being said, there may be something within both the joint business (if in fact it was operated and maintained jointly) and possibly, the house mentioned above.

At the very least, I believe it's worth a telephone call. Good luck.