They put their best foot forward, slowly get comfortable with each other, and eventually showing their regular side.

This has been the way it is done recently, but relationships aren't lasting as long as in the past, where they only really got to know each other after the wedding. As weird as that might sound to us now, perhaps it meant that people fell in love with the real person as they saw them in all situations, rather than the "best face" of the person whilst dating. They learned to love each other as they are, instead of the façade that fades as normalcy sets in.