The Prophet,
peace and blessings be upon him, says:
"Three
qualities, if found in a person, will help him have perfect faith: Having Allah
and His Messenger, peace and blessings be upon him, as the most beloved ones,
loving a person only for the sake of Allah and hating getting back to Kufr
(disbelief) the way one hates to be thrown into fire."
That means
love is a fruit of piety. Love without piety is mischief.