Honestly, most people only have a factual knowledge of the love of God. Were they to FALL IN LOVE with God, it would be TOTALLY DIFFERENT. The person who is intoxicated with love wants to spend even the time and money they don’t have with the person they love. He laughs at the person who has never experienced it: You just don’t know what love is. You may know about love intellectually. But you don’t KNOW until you have experienced it.
Before I met my wife, I knew the feeling of “loving” someone who did not reciprocate. This is a picture of God loving us humans, and we don’t reciprocate. We love our sin. We ignore God for our own desires. We even deny His existence. And He keeps longing for us, in love with us.