Two steps above clueless virgin.  It's not that far, but he's not a complete idiot; he's just nervous as fuck.  Still, she does manage to coax his member into hardening, a brief shudder running through his body as she does so. She didn't feel anything immediately because of his nervousness, but a moment later, his tongue would be out, gently pushing against her flesh; this would then be followed by gentle sucking, teeth against her flesh though he hasn't bitten her in any way...yet.