The springs of love are in God, not in us. It is absurd to look for the love of God in our hearts naturally, it is only there when it has been shed abroad in our hearts by the Holy Spirit. If we try to prove to God how much we love Him, it is a sure sign that we do not love Him. The evidence of our love for Him is the absolute spontaneity of our love, it comes naturally.
~Oswald Chambers, My Utmost for His Highest.