If possible her smile seemed to brighten as soon as the words had left his lips. He loved her too. They were in love and nothing else in this world or any other mattered. This was where she belonged. Not Heaven, not Purgatory, not with the Winchesters attempting to be a hunter or atone for her sins, but right here with Adam. Being with him made sense, his presence brought her a sort of peace she hadn't been able to find in a long, long time and she was willing to do anything (including cutting out her grace) if it meant she could stay by his side.
She kissed him back, soft lips parting slightly for him. She'd never kissed anyone (except for a demon but he hardly counted) before but could work with what she'd observed in television and Jamie's well-studied memories. Occasionally she missed the human presence of her vessel's soul but the young woman had been lost to her after Lucifer had very nearly destroyed them. When the angel was resurrected the human hadn't been able to come along for the ride. Without her and cut off from the other angels there'd always been a feeling of loneliness hanging over Cass' head. She didn't feel that anymore. Not now that she had found Adam.