In fact, this issue should not be judged in terms of either/or, but should be analyzed in detail on specific issues.

First of all, I think letting the other person use your credit card is a kind of trust. It cannot be judged by how long they have been together. It means that it depends on whether the person is trustworthy, which mainly refers to his financial management. The seriousness is whether it is used only when it is used; the second thing is to see what he uses the money for. If it is legitimate, such as paying necessary medical expenses for training and training, and the amount is within your affordability, I think it is okay to use it occasionally.

But the main premise is what does he do? Is it difficult for him to have no regular income from a legitimate occupation? If he doesn't do any work and only wants people to give him money to spend, then you shouldn't let him use your credit card. You are raising a lazy person, and it is irresponsible to your boyfriend and society.