His begging her to keep talking makes her shiver, makes heat coil in her belly. She strokes the other nipple with her fingers.

"Going to toy with your nipples for a while," she tells him, voice low. "Twist them a little in that way you like," she says as she does just that. "Maybe I'll even take them in my mouth for a while, suck on them."

She teases one nipple with her fingers, sucks on the other, gently at first. She'll increase the intensity if he indicates that he wants it one way or another.