Well naturally he wanted faster - he enjoyed things that kept up with the pace of his mind. Like the speed of Gregory's mouth, sliding up and down his cock? Mycroft found the quick slick and slide very soothing as well as arousing, because his mind jerked with every single slide of Gregory's delightful mouth.

His fingers did start to clutch into the sheets - after all he was not a young man any more. He knew that he would come within minutes of being swallowed down by Gregory. What really did it though, was Gregory deepening his swallow just as his fingers dipped in deeper and twisted on that bundle of nerves. That small touch, that glide of trustworthy fingers?

Mycroft was gone, over the cliff and crashing into his first decent or rather, excellent orgasm in over ten years.