I check the salt line at your window as you crawl into bed.
"Night Dad." You tell me, when I tuck you into bed.
"Love you. Sleep tight. Angels are watching over you."
That last bit, about the angels? My Mom used to say it to me.
But that's only half the reason I tell you that now. The other half is because I want you to know that someone's out there watching out for you.
I hope you never find out how true it is, that angels are watching over you, but I know Cas will always keep an eye on you, even when I can't be there.
A/N: I can just imagine Castiel watching out for Dean's and/or Sam's kids if they ever had them.