She returned Dean's kiss tenderly, then settled between them again. She absently drew her knees up and rested her head on Dean's shoulder, her eyes turned to Cas as he caressed her hand. She smiled a little, glancing down at their hands, then met his eyes. It almost scared her, the intensity with which she could feel what he was feeling. In some ways, she was terrified of meaning so much to a person. And now to have two people depending on her...it was almost too much. Almost.
"Yeah, I know." After a moment she broke the eye contact to lift her head and glance to Dean. "You both mean that much to me, too."