She's not the only one making noises here; he's not above a little groaning himself - that tongue, she's like sucking on a melting ice cube or something a little less drastic. Either way, it's amazing. The fingernails are also a very good thing in his opinion, and the answering hum as she drags them down alludes to that. Working on his pants is totally encouraged - the pressure alone from moving them is teasing, but he is still exploring her, now more free to do so, a hand sliding down over her hip to look for those glowing lines and just trace the curve of her, the other hand coming up to tease around a breast before rolling his thumb over the nipple to watch it peak. And his mouth, working back at hers all the while, letting her explore his own as much as she wants, but poking back every so often to check out hers as well. ]