I own a small part of a business I also manage and was recently offered a larger part of the business with a loan from the business, all on a handshake no agreement. Sounded good at the time but I never really understood how it all worked and was talked into it on other partner's terms. Not wanting to let them down I made payments for 6 months but it was clear I could not afford to do it. With no actual agreement in place, I want to just go back to owning my small portion and not continue with this business loan. Where do I stand under contract law?