Is it true?

As far as i know, the answer to your questions are `no' But there maybe similarites in them due to the effect of their surroundings, and their habbits, they would have learned to like and share their interests and their thoughts would also be similar, so it can to a certain extent cause similarities in their appearance, but it is not a must that it causes them to look similar.the same might apply for gays too, like i said its just a matter of your minds,and not ur physical self

The relationship of husband and wife is different from other relation ships. They are partners for life.