That cheekiness makes Sam laugh, eyes lighting with his grin as he leans down to kiss Castiel again, his fingers still on Castiel's chin. He keeps the kiss gentle and still chaste. He'd leave it like that until they were on their own.

Not that it stops the rest of the pack from cheering and clapping, Gabriel even adding a whistle that makes Sam start laughing, which breaks the kiss as he lets go of Castiel's chin to flip them all off.