"I like to touch," Gaius murmured, licking his lips as his breathing sped up. It was incredibly arousing, being bare and completely at Sirius' tender mercies, and he enjoyed this even more than the excitement of the pursuit.
Reaching up, he began undoing Sirius' buttons slowly, taking a moment between each fastening to caress his fingers at the increasing expanse of bare flesh revealed. He finally reached the last one, and with a naughty smile he pushed the shirt back off Sirius' shoulders before sliding his hands down, fingers tweaking Sirius' nipples. "I like to look, too - and I must say you look delicious."