This author doesn't understand at all why a man and a woman who can't become lovers would become friends.

Source: Tatoeba

Mary and Alice are a legally married same sex couple.

Source: Tatoeba

A couple from Boston was also killed.

Source: Tatoeba

You need two to make a pair.

Source: Tatoeba

The owner of this house has two twins.

Source: Tatoeba

Mr. and Mrs. Smith are a good match.

Source: Tatoeba