1, please negotiate and communicate about this first, and talk about the monthly repayment. Everyone should be self-disciplined and get the monthly money ready in time.

2. If the negotiation fails, you can directly say that the house is sold. After all, two people buy a house together to repay the loan. If one doesn't want to repay the loan or is overdue, he can't.

So you should tell him the seriousness of the matter.