On the other hand, if you repay the loan with him, will your name be added to the house? Can I add it now? As a married person, I remind you to protect your rights. Otherwise, you pay back the money together and raise his sister together. If something else happens before, you will end up with nothing.
If this family is really good, if you like. This is actually not bad. Because if you get married, it can't be so real. You must help him repay the money he owes, whether it is humane or legal.
There is nothing wrong with your parents. Because they are completely thinking of you. Anyway, it is right to think it over before getting married now.