Your Q is wrong.
Every one has one heart, not only you.Why do you compare heart with number of loves?

Don't you know that you love your "MAM"?
Don't you know that you love your "DAD"?
Don't you know that you love your "WIFE"? if you have! depends on how many you have
Don't you know that you love your "children"? if you have! depends on how many
Don't you know that you going to love grandchildren?if you have, depends on how many

Don't you know that how many loves you have in your heart?.

Love is any of a number of emotions and experiences related to a sense of strong affection and attachment. The word love can refer to a variety of different feelings, states, and attitudes, ranging from generic pleasure.As an abstract concept, love usually refers to a deep, ineffable feeling of tenderly caring for another person