There wasn't a whole lot that Fabian could think of that was sexier than that. How was he supposed to know about not getting rough? Sirius already felt vice-like inside, so much so that Fabian wondered just how much more his friend could take.
Determined not give Sirius everything he wanted, he allowed a shudder to pass through his body at the touch to his tip, then twisted his fingers in impossibly finger until the knuckles that met his hand blocked his way. What he felt made his body tingle. Deep inside, a flat surface begged to be stroked and Fabian did with the tips of his fingers as his mouth eased over to Sirius' ear.