'...God is love. This is how the love of God is revealed to us: God has sent his only Son into the world so that we can live through Him' 1 John 4 verses 8,9
The deepest hunger we have in our lives is to be loved and also to have someone to love back. We don't always recognise that and try to find fulfillment in other ways. I sometimes see someone who's fallen into deep sin and wonder if they started off looking for love in the wrong places and found disaster instead, these places are described in the bible as 'broken cisterns that can hold no water' Jeremiah 2:13.
The more we look at Jesus, the more we discover the selfless unconditional love of God, for 'God's whole nature is living in Christ' Colossians 2:9.
But, the true secret is to let that love of God into us deeply and lead us out from our narrow sinful selves into a freedom we never new existed. That is the heart of Christianity.