Of course, there is also a problem of risk expectation. Personally, I think that you have only paid part of the down payment, and there is no marriage relationship between you (I don't understand it correctly), so it is more appropriate for you to sue for the creditor's right relationship of returning the house purchase price, and if you can prove that you have paid the relevant money, the chances of winning the case are very high. I hope my answer is helpful to you.
Answers from the Panel of Civil Legal Experts