John was still glancing around, making sure there was nothing dangerous around, when she suddenly leaned in and kissed him. First he was too startled to react, but then instinct took over and he kissed her back.
Before he really had a chance to comprehend the situation and actually enjoy it Jennifer broke the kiss and stepped back. He stared after her, stunned for a moment. She had kissed him. He hadn't thought she'd do that.
Finally getting what just happened John started to grin slightly and then followed her quickly. He wouldn't just let her get away with that. Grabbing her arm he pulled her back and then kissed her properly, wrapping his arms around her. All thoughts about Rodney or Ronon were completely forgotten as he deepened the kiss and pulled Jennifer even closer.