neither circumstance had occurred much , if at all , since michael could walk , and she felt a small wave of guilt roll through her chest , then die in the pit of her stomach as she remembered kissing the flesh around dave 's fresh scar in the kitchen at 4 a.m. , on her knees , tasting the fear and adrenaline in his pores , any worries about aids or hepatitis conquered by this sudden need to taste him , to press herself as intimately as possible against him .