Nakedness becomes shameful when the woman is an object for the man, or the man an object for the woman. Interior innocence kept Adam and Eve from reducing each other to the level of a mere object. They were united by their shared awareness of the body as a gift. When does the body cease to be a gift? When we turn it into an object, using it for self-gratification. This denial of the gift marks the end of innocence and the beginning of shame.