I am trying to figure out who would lite the unity candle. My parents are still married, so I know how that will work. But my fiances parents are divorced. They are all friendly with each other. His dad has been remarried for almost 30 years (his stepmom is the one who introduced us) and his bio mom has been dating the same man for several years and he is like a stepfather to my fiance. Someone told me that even though they are divorced, his bio mom and bio dad should light the candle. Does anyone know what the etiquette is for this? Or does anyone have any previous experience with this?