he moved lower , sweeping kisses over her stomach , teasing her navel with his tongue , grazing his mouth over the erogenous zones under her hipbones , causing her skin to twitch with pleasure , his hands caressing her legs apart , long , shiver-inducing , purposeful caresses on her inner thighs , and the tension of becoming more and more intimately exposed to him had every nerve and muscle in her body poised on a very fine edge in anticipation of being touched there , and taken to even more extremes of feeling .