It simple if 2 mii are sweethearts and 1 of the have a heart on them that mean one of them going to pouse to there sweetheart then there a little min game where u have to wait when he or she going to have a their sweetheart in a thought balboo the quickly tap the heart on the botum then the mii who about to posoe to mii will say some stoff when u get the 4th time he or she will ask them to married