She understood his reasoning for not letting her use this particular method very often, and she certainly agreed that neither of them wanted him to become too used to it. Watching him come undone from her 'innocent' ministrations to his hand was one of her favorite things, after all.

For half a moment, she was tempted to sit up and fully take charge of the situation, but she was too comfortable there on his chest, so she just lifted his hand to her, making sure his arm wasn't at an awkward angle. She smoothed her thumb lightly along the edges of the slit, marveling at the strange sight of it for a moment before leaning in close to trace the tip of her tongue along those edges as well, the bitterness of the enzyme a familiar taste by now.