The look in her eyes almost made Terrence want to stay here and get all of her clothes off (or, preferably, go somewhere warm to do that), but he could save that for after they'd accomplished this. He got to his feet as well, buttoning his coat and fastening his trousers. He imagined the look in his own eyes was no less crazy and dark with desire, because he honestly didn't know which was more appealing, the idea of her owning a part of his soul, or having a part of hers inside of him.
Of course, this could backfire terribly. But his research had gone well in this area, and it wasn't as though they hadn't killed anyone before. He grinned at her confidently, and wrapped an arm around her shoulders, enjoying the feeling of her pressed against his side. "Let's go make a sacrifice to our future vengeful godliness."
An hour later - or maybe more, Terrence had lost track of time - there were two dead bodies at their feet, and the spellwork had been completed. Terrence could feel the tear inside him, a twisted and jagged sensation, but it was far outweighed by the feeling of her soul in its place.
He didn't feel like he had lost any part of his soul at all, if anything he'd gained in the process; holy hell, that felt incredible. And he knew she was feeling it too, knew it with more than just his usual intuition about her emotions. They were more in tune than ever, and if the enormity of the new sensation would ease up enough for him to move, he wanted desperately to see what would happen when he touched her. For the moment, however, he was frozen in place, eyes alight with an unholy fire and staring into hers.