The first half shows the hidden worry in your heart, that is, your boyfriend's fiancee will affect your relationship (this hidden worry haunts you like a ghost and makes you uneasy). You hope your boyfriend can handle this matter in a general manner.
The second half shows your desire to marry your boyfriend early (many friends-marriage witness; Square-besieged city-marriage) and the collapse of the house is still the expression of hidden worries in your dreams for the first half of your life.