Hatred stirs up strife, but love covers all sins. Proverbs 10:12
Hatred is in contrary to love. The stirring up is in contrary to covering over. And strife is what hatred promotes, whereas love seeks to make peace by covering all sins. Hatred looks for a strife and refuses to smooth things over, but love desires peace between warring parties and will not be involved in provoking dispute.
The root of hatred is devil and the root of love is God. The purpose of devil is to create hatred between one another. Thereby not only destroys the other person but also one's own self. It's easy to hate because of the nature of our flesh.
In contrast, its complicated to love at all times. Until the love of God flows in us and until we obey Him we cannot inculcate His Love in us.
May the Love of God overflow in us.