it wouldnt just be a "guy"
it's be a guy who has been with her for a long time and they love and care deeply about each others and have decided to get married
BIG WEDDING and BIG DIAMOND got together to set these "rules". Just like Valentine's Day suddenly filled in the commercial doldrums between Christmas and Easter.
it's be a guy who has been with her for a long time and they love and care deeply about each others and have decided to get married