Dean would have broken the kiss off had Jo not returned it, but when she moved her arms around his back he deepened it, moving closer and wrapping his arms around her as well. It was wrong, he knew, to start something like this now. He had avoided starting something with her so many times because the timing was wrong or he knew he'd have to go soon. Now he couldn't leave unless he was forced to make a deal to save his brother, and Sam was gone and the world had gone to hell...but he couldn't stop himself.
"Jo..." Dean paused, his lips drawing back from hers just a fraction, his arms loosening but not letting go. His voice was low, little more than a rumble, and he wasn't sure if he was asking for permission to kiss her again or apologizing for doing so the first time.