Husband takes friends to the supermarket to talk.

Maybe you are all people who invite people to meet, and then he thinks he has better conditions and then goes out to play together. He spends money, he feels embarrassed, and then he is willing to do this with you. Then you think that although he has better financial conditions than you, he can't always let others spend money. You are also a very concerned person. Actually, you don't have to buy her anything. You can invite her to dinner, or in other ways, or go out to play together next time.