So what she was doing definitely had him hardening at a quicker pace.  His hands clutched at her head for a few seconds, his own mouth going slack.  The tentacles on his body would reach out to stroke along her body, the mouths moving along her scaled skin, nibbling in their own fashion.  "You're a quick learner," Xyveris said with a soft laugh.  "Continue doing that, please.  Perhaps slide me in a bit deeper."  With precum starting to leak from the tip of him, it'd be easier for her to slide more of him down her throat in a fashion that was absolutely obscene.