I don't know if your boyfriend and you are husband and wife.
If you are married, you should be reasonable, but generally speaking, you have no right to interfere with his behavior.
But if he has some good friends (except these fair-weather friends), you should guide him
away from fair-weather friends.
Generally, a man is afraid that his wife or girlfriend will say that his friends are not good, because many of these friends have existed before his wife, so it can be said that the relationship is earlier than his wife. At this time, you must play the role of a wife. If you are already wives, you should strive for financial initiative and let you manage your finances. Because your husband has defects or hidden dangers in this respect, it is likely to lead to great setbacks in the future. So you should strive to be the financial director of the family.
Of course, once you get the money management, you should also give your boyfriend enough power. I mean, don't be too strict about where to spend it. Let him feel the benefits of your financial management. In the meantime, you should have your own bottom line. Too tight control over a small amount of money will make him bored. So don't be too tight. But when a large amount is involved, it should be reasonable.
on the other hand, the home is run by two people, and it needs two people to participate.