quarrels is helpful to improve the relationship between the lover,right?

Yes, I feel that the view is right. Because quarrel starts due to difference in opinion and this indicates that both have opinions on each other. This condition of mutual opinion is nothing but the depth of love and faith between the spouse. For no quarrel, this opinion level of the two persons must be same and this ultimately balances the faith of each with other. But if the opinion level carries difference for long time, faith develops imbalances and this is converted to quarrel. In other words we can say with sure confirmation that quarrel is the sure and acid-test of deep and responsible love between the spouse. Thanks.