As one argument for the latter, Lewis relays his own observations that women themselves don't respect men who shirk this obligation. The theme of moral behavior not being enslaved by emotions continues in Lewis' treatment of Forgiveness on pp. He observes that Christians are called to forgive their enemies, not to have undeserved good feelings about them. He does it by an act of will, even when he is neither fond of himself nor finds himself attractive in the least. Lewis said in his chapter on sexuality that it is not the center of Christian morality.
Pride is at the root of many other symptomatic sins.
Charity , says Lewis on pp. 100-103, is Christian Love. As such, it is not ruled by emotions. It is a conscious choice to act as if you love someone. When you are behaving as if you loved someone, you will presently come to love him.