Possibly.  You have a duty to the business you were running with him.  That being said, if you legally separated yourself from the joint business, he likely will not prevail.This is not legal advice and is not intended to create an attorney-client relationship.  The post is only an opinion.  You should speak to an attorney for further information.  The poster is licensed only in CT & NY.  Please visit www.hamadlawfirm.com for more information about our services.