What is the main conflict in Light in August by William Faulkner?

In Chapter Four, Faulkner presents two of the story's central conflicts, one internal and the other external. One of these conflicts is centered on Byron's internal struggle, a struggle that he can barely articulate. Byron is already in love with Lena, yet he has not quite grasped that fact. Byron is a loner who has long avoided close relations with his fellow man, or woman, and thus does not initially recognize love when it has found him. He considers himself a good man, and spends all of his time either at work or at church to ensure he does not get into "trouble." Yet, what this actually indicates is that Byron is afraid of his deeper emotions, and fears that if he allows himself to feel those emotions, he may betray his principles in some way.