Second, if you help him buy something from your account, the seller will deliver it first. After receiving the goods, the money paid to Alipay will be paid to the seller, which has nothing to do with you. After the goods arrive, you just need to confirm the receipt of the transaction.
Third, if he really refuses to pay the bill, it's none of your business. In a few months, the bank will send him a lawyer's letter If it is a malicious debt, he will suffer. If it is your friend, you'd better persuade him.
Li Yanli Bo also mentioned a possibility. If you steal someone else's card to buy something, the consequences will be very serious. Of course, we only mentioned one possibility.
Also, you mentioned that the other person has only known the netizen for a few months, and it is recommended not to do such a thing, no matter whether it is true or not, the risk is too high. Put yourself in the shoes, would you entrust a large transaction to someone who is not familiar with the details so easily? I won't anyway.