Terrence's arms tightened around her when she transformed back. He liked her animagus form, but Merlin, there was nothing compared to the feeling of her human form beneath him, in his arms. Absolutely nothing. He kissed her back, laughter muffled and starting to fade as mirth gave way to desire, wonderfully intense and heated enough to melt the snow around them.
And then cold ice hit him in the side of the head, trickling down his neck under his coat, and he broke the kiss with a gasp of shocked laughter. He gathered snow in his hands and slid them, ice and all, under her coat, smirking as he leaned in to bite down on her throat.
Oh, she was going to last forever, he'd see to that. There was no way in hell he was going another day without literally owning a part of her soul, his security against losing her forever.