Christianity kinda has a proverb for that, actually, as silly as that sounds.
"If your enemy is hungry, give him food to eat; if he is thirsty, give him water to drink. In doing this, you will heap burning coals on his head, and the LORD will reward you." Proverbs 25:21-22 (Emphasis added)
God is very much aware that loving people who are mean to use drives them crazy. XDDDD