Human beings are free because God is free. God freely chose to create the universe from nothing: otherwise God would have been answerable to some other power greater than God. Therefore God is absolutely free and so human beings in God's image are  gifted with the capacity to make free choices.  Love requires freedom of choice.  Love without freedom of choice is not love.

Key to understanding the notion of emotional and affective maturity is a proper acknowledgment of the importance of human freedom in the integration of our emotions. Created in the image of God, human beings are rational and free. When emotions come to dominate our thinking and acting in a way that compromises our freedom, then we are not living the fully human lives that we are created to live. When, however, our emotions are integrated through our rationality and freedom into our efforts to fulfil our calling to live wholeheartedly—to stand up for love—then emotions play an essential part in realizing human flourishing. The classical language of the Catholic tradition expresses this human flourishing using the emotive term happiness.

Happiness, beatitude, or flourishing is, according to classical philosophical and Catholic tradition, the thing that all human beings desire and which will ultimately be found in eternal life with God. Because we are endowed with reason and freedom by God we are able to experience a 'not-yet' perfect version of that happiness here and now. As images of God, that is, as God's representatives on Earth, we are able to work for the realisation of this happiness, this flourishing. Through our moral behaviour, moral choices and moral actions we can incarnate God's love in the world. In this way, we can literally make the world and ourselves, happier. Our emotions function to help us to perceive those things which are good because they contribute to this happiness, and those things which are bad or evil because they may ultimately frustrate the realisation of true happiness.

Issues of sexuality and intimacy are closely tied to issues of power and justice (Ferder & Heagle, 2007). When channelled in life-giving ways, sexuality contributes to human flourishing, joy and the sense of belonging for which each of us yearns. In this way, healthy sexual relations overcome distortions of power, seek equality and mutuality, and are visible signs of the Good News preached by Jesus. Good relationships set us free. However, the freedom such relationships give is not a freedom to do as we please, a freedom from all obstacles to our own desires. Rather, by restricting our freedom in a certain sense, we are liberated to take responsibility for our own and others flourishing. Good relationships help us to truly taste the goodness of life.

With freedom comes responsibility. We are responsible for our moral behaviour because we are made in God's image as rational beings, capable of knowing what the morally right and good thing to do is and as free beings, capable of choosing to do the morally right and good thing. These two capacities, to know and to choose, together form what is called conscience. Loosely translated, conscience means 'with knowledge'. In other words, when we make moral choices, we make them based on what we know about the goals we want to achieve, the ways or means to achieve them, the circumstances in which we need to achieve them and the consequences of both the means we choose and the outcomes we achieve. When we have weighed all these things, we make a judgment based on our knowledge of what the morally right thing to do is. We are then obliged to follow our conscience and do the morally right thing, taking responsibility for our decision.