The man knew that the woman didn't want to drink dysmenorrhea, so why did he persuade her to drink it?

If a boy already knows that a woman has dysmenorrhea and doesn't want to drink, then he should be advised to drink, or do something between men and women in the name of wanting his sister to drink. If the relationship between men and women has been determined, it means that boys disagree. If the relationship between men and women has been confirmed, it means that this boy doesn't care about this girl, so it is something that a boy should have, that is, he may not care about this girl in the future, and this girl will definitely consider these issues.