Divine Revelation has shown us that God is a free and total outpouring and exchange of charity as Father, Son, and Holy Spirit. What is more is that He has destined us to share in this great and mysterious exchange of divine love!
As agents of Christ in the world, our approach to the world around us ought to be different than that of an unbeliever.
Despite our complete inadequacy before God, we know that He desires that we open up ourselves in order to give ourselves to Him to the best of our abilities—even if it falls short. Love requires an openness that makes one vulnerable.