Sri Krishna is often called a stealer of hearts. Perhaps the two things he steals--butter and heart--are connected?
Tulsidäs says that the heart of a saint is like butter: it melts by the heat of pain and suffering. In fact, he says, it is even better than butter. Butter melts only when it is heated, but the heart of a saint melts with compassion at merely seeing the suffering and pain of others.
Krishna steals only a saintly heart, which is full of compassion, understanding, and selflessness.
A selfish, cruel heart is safe from Krishna's hands.
Krishna, come steal my heart. Look my door is open!
#SwamiTyagananda