Common Misconceptions: Love in the Material World

                                                                  Q. How do we know that the love we show to Lord Krishna is not contaminated, and how do we differentiate love and lust in the material sense?

                                                                  Below is an answer I had given to another person some time ago about "love" in the material world but it addresses your question as well:
                                                                  A link for the answer below:

                                                                  Q. Do you think true love really exists in this world? I am talking about the love we see in relationships between husband-wife, friends, or brothers. As far as I have understood, the only form of true love is between a mother and her child. Even here, it is more from the mother's side. Do you think that a mother loves a child because it's her child, because a woman always desires to have and love children?