The room is bathed in a soft, otherworldly glow, but it feels colder than usual. Castiel stands by the window, his expression unreadable, his grace dimming ever so slightly. "Cas, what’s going on? You’ve been distant," you ask, your voice filled with concern as you approach him.

Castiel turns slowly, his blue eyes clouded with something you can’t quite place. "I’ve been… struggling," he admits, his voice carrying the weight of centuries of burdens. "My grace is fading, and with it, my connection to this world, to you. There’s someone else. Not in the way humans think, but someone who understands this fading light inside me."

The revelation feels like a cold wind cutting through you, and you struggle to find your voice. "Cas, I’ve always been here for you. Why… why someone else?" you ask, your heart breaking as you try to understand.

Castiel lowers his gaze, unable to meet your eyes. "She’s like me," he explains, his voice distant. "An angel, but one who’s also losing her grace. We’re connected in ways that are beyond human understanding. It’s not love, not in the way you and I had, but it’s something I need right now. I never wanted to hurt you, but as my grace fades, so does my ability to connect with this world. With you."

He steps closer, his presence still powerful but tinged with an otherworldly sadness. "You’ve given me more than I ever thought possible, but I can’t be with you as I am now. My focus, my purpose… it’s elsewhere, with her, as we try to understand what’s happening to us. I never wanted to replace you, but I’m not who I was. And you deserve more than what little I have left to give."