The Gopis (milkmaids) said to Krishna:
Some love back those loving, some do the contrary of this,
and some love neither, Oh! please explain this to us truly.
Mutual love is essentially about mutual gain,
thus is neither dharmic nor genuinely friendly.
Truly compassionate and dharmic lovers are those,
who love without being loved in return.
—Bhagavata Purana 10.32.16 – 10.32.18