Castiel's back arches even more. He bends, lifting his ass towards those fingers, welcoming the way he's being breached. It's familiar and comfortable. Soothing. Safe. Sam.

"No... You wouldn't want that..." he pants into the pillow, trying not to make pathetic little noises that show how much he craves it.

He can admit that for Sam, he can be a slut. Even now, even after tonight, his body just welcomes Sam with ease, desire sparking along his nerve endings more than touching his balls or erection ever could just because Sam is finger him. And a moment after the intrusion, Castiel relaxes down again with a deep, satisfied smile. He wants more, but this is nice, relaxing, wonderful.

"I love you..."