Check out Love Is My Religion – one of the several books Rabbi David Aaron has written.
People often think that Judaism is a religion of law but not of love. They claim that it is more about fearing God and feeling guilty rather than loving God and feeling joy. They conclude that it leads us to a life of weakness and submission and robs us of our power and freedom to be our true selves. Love Is My Religion demonstrates how Judaism is quite the opposite of these misconceptions. It is founded upon love and its purpose is love. Its teachings encourage us to be strong and its laws empower us to achieve true freedom, choose love and experience the ecstatic joy of being in love.