What is the point? You cannot be part pregnant, and you cannot be part married. Of course, you can do whatever you want, but it is not a marriage ceremony. I would be hesitant to get up in front of a bunch of witnesses, without a license, and make the marriage vows because in some countries that might constitute a marriage. Later, if you do not end up together, you might have to go through a divorce so as to not become guilty of bigamy.
Answered on Oct 22nd, 2013 at 11:56 AM