With etymological origin in the Latin word marītus , husband is the name that the married man receives with respect to his spouse. When a person contracts marriage, it becomes the husband of his partner.
For example: “My husband went out to buy dinner, he will surely be back in half an hour or so” , “Ana's husband works in a restaurant downtown”, “The actress had three husbands but died alone” .
For many years, marriage involved the union of a man (the husband) and a woman (the wife). However, today many countries legalize the marriage union between people of the same gender: for this reason, at least at the legal level, it is preferred to speak of spouses.
If two men marry, however, it is possible to refer to both as husbands. This use of the term is correct if the definition of the Royal Spanish Academy (RAE) is taken into account.
It is important to consider that the notion of husband must always be understood in relation to his spouse. Let's look at a specific case. Actor Michael Douglas is the husband of actress Catherine Zeta-Jones. The couple married in 2000 and had two children (Dylan Michael and Carys Zeta). Douglas, in short, is Zeta-Jones' husband because he married her; but he is not anyone else's husband. Only Zeta-Jones can speak of Douglas as "my husband . "
It should be noted that divorce implies the legal breakdown of a marriage and, therefore, the man ceases to be the husband of his former spouse. Returning to the previous example, if Douglas and Zeta-Jones divorce, he will no longer be her husband, and will even be in a position to become someone else's husband.