Why do husband and wife start looking alike after a few years of marriage? It’s not a joke, there is science behind it

Often you must have noticed that husband and wife start looking alike after some time of marriage. Their physical appearance, the way they talk, the way they sit and stand, everything becomes the same. It seems like they are brother and sister. There is science behind it. In fact, when husband and wife live together, not only do they spend most of their time together, but their body microbes also share. While kissing or sleeping, these microbes get transferred between the two. Because of this, after one year of marriage, there is a lot of similarity between the husband and wife.