If the money in the credit card is only used by the man for separate investment or expenditure, the debt has nothing to do with the woman, and the woman does not need to repay it, and she has no obligation to repay it.
In this case, the 50,000 yuan owed by the man for playing online games should be borne by the man unilaterally, and the 50,000 yuan for buying a car should be jointly infringed by the vehicle, and the debt should be shared equally by both parties. Other debt allocation.
The woman has no financial resources. She didn't write an iou to the man, but directly agreed or made a judgment in the woman's name, and both the bank and the woman would investigate.