The sucking on her nipples drew another cry from her.  "Ooooohh yes."  She wanted more, wanted him to keep driving her to blissful oblivion with the use of his mouth.  Her hips rocked slightly against his, as much as the could with the way she was restrained.  "Ah yes, Collin.  YES!"<br/><br/>Nev had been tied up before, not by anyone as expert at it as Collin.  This was her first experience being tied up to increase her pleasure, being restrained by her position rather than being tied down to the bed.  The newness added to the excitement and intensity of her experience.  Each thrust from Collin was met by a whimper or moan.  Her climax drew closer and Nev changed her her tactic.  She couldn't move her hips much, but she could make excellent use of kegles.  She tightened her muscles around so that each time Collin pulled back he had to drag his cock through muscles working to pull him in an then she'd relax and allow him to slide in easily.