He moaned into my lips, "I know." When he nibbled at me, the point of one of his fangs just missed my lower lip.
His fingers moved slowly and deliberately along the string, through the fabric, and then out into the cup of my top. The sensation of the swimsuit rubbing on my tender nipples was incredible, and I yearned for more.
His voice crackled with effort. He paused for a while, then said in a shaky voice, "I'm going to keep going until you tell me to stop."
I didn't know whether he was trying to scare me off or convince me.
When I tried to speak, my throat suddenly became tight. I was hoping he wouldn't quit on me. For a while there, I lost any sense of perspective and focused only on myself. To myself, I kept thinking about how remarkable and fascinating this adventure was.
My silence must have given him the idea that I wasn't going to say anything, since his fingers moved slowly inside from the rim of the cup and over my ribs to the bottom string.