The Dark One enjoyed sleeping naked.

He'd begun the practice when he'd moved to the Dark Castle when Bae had left. Their simple peasants' sheets had been scratchy and worn requiring a layer of protection between the skin and their rough texture, but not so the lovely sateen sheets he procured once he could indulge in them. After his boy was lost, Rumplestiltskin indulged in a great many things for a great many years simply because he could. Many of those indulgences and addictions failed to sate his loneliness and guilt after despair and time set in, but the bedding remained.

Rumplestiltskin had the sheets specially made using a type of silk from a worm only found in Yanshan, a kingdom in the Far East and were interwoven with softly spun yarn. The luxurious fabric felt good on his curse roughened skin and often adjusted to his body temperature by never being too hot or too cold and the spinner that lay mostly dormant inside of him could appreciate an artisan who was skilled at his trade. A king wouldn't get a better night's sleep than the former spinner, and Rumplestiltskin enjoyed knowing that.

Belle discovers his habit of sleeping in the nude the evening after the curse breaks. She is installed in a guest bedroom, but anxiety and a thirty year separation find her slipping into his bed. At first Rumplestiltskin is apologetic and flustered, but moments later Belle discovers there is something freeing about skin touching skin while wrapped in the most luxurious fabric ever created.