The window in which she could still stop him was closing fast for Lucy as she let her nails rake softly against his back like that. His teeth and lips were soon joined by Natsu's tongue as he started to lick over her most sensitive points before nipping more firmly as if he was a predator bringing down his prey in terms of effectiveness. It was all quite simple. He wanted more of those delicious noise and building heat he could feel inside of Lucy. Nothing more nothing less.