Consult an attorney to see what you can do about getting your money back asap. Hopefully you'll be able to recoup at least some of it. Regardless, look at that money as an investment in finding out that person couldn't be trusted as a partner for the long term, and you avoided losing potentially a LOT more money by working with them even longer. We're here to help you with your business, and you can leverage our knowledge and expertise to continue building your business.