Silence is Key (Sabriel)

(COMPLETED STORY)
Mute!Sam comes to Sioux Falls to live with Bobby his 'Uncle' and goes to Sioux Falls High, where he meets Gabriel. Their friendship start with a science project and progress to something more as they get to know each other. Sam's parents died, Gabriel's parents died also, one little factor they had in common but don't tell each other. Castiel and Dean hit it off as well.