Greg decided that enough was enough; if he was freezing at this point, Theo must be almost frozen stiff. Greg sat, pulling his legs up and shifted the covers over both of them. He was at Theo's back, and he buried down underneath, the covers thrown up over he and Theo's head.
"Lumos" he whispered, and then he turned on his side, facing Theo's back and tried to think about what the words were to the warming spell. He stumbled through the incantation with no results, and he pulled his legs up, curling into Theo's back slightly. At last, a notion came to his head and he tried a hot-air charm. After a few attempts, Greg had hot air blowing out of his wand and he grunted, making a sound of supreme satisfaction. In moments, Greg started feeling warmer and more comfortable, and he began to relax, feeling satisfied and growing sleepy as the warmth enveloped him. He put out a comforting hand onto the back of Theo, at his shoulder, and made another sound of satisfaction as the boy felt not nearly as cold as he had before. Greg kept the charm going, waving it lazily up and down Theo's back, in an effort to warm the other boy and himself in the process.