Answer:
.At first they are deceiving themselves into believing they feel nothing for each other, and wage a 'merry war' trading witty insults, then both are tricked into believing the other is in love with them. The result of this is the positive resolution of their relationship: an emotional declaration of true love, and finally a sincere and very open relationship, all ironically caused by deception.
*people can be tricked in good ways as well as bad ways.