God is love. He is the source of the love that humans know and has. So, the short answer is that our love consists of the essence of God in our lives. While it is difficult to define love, we have a description of it in 1 Corinthians 13: 4-7 (NLT)
"Love is patient and kind. Love is not jealous or boastful or proud or rude. It does not demand its own way. It is not irritable, and it keeps no record of being wronged. It does not rejoice about injustice but rejoices whenever the truth wins out. Love never gives up, never loses faith, is always hopeful, and endures through every circumstance.."
Therefore love consists of patience, kindness, humility, and all the other virtues suggested in these verses.