Sam didn’t know what was worse. The fact that he had a kid for god knows how many years, or the fact that no one thought to tell him until now.

He was with Dean and Castiel in the bunker when he got the call. He answered it, expecting some call from a hunter, or a spam call, but instead, it was from an ex’s brother.

He basically said, I digged through some of my dead sister’s old journals, and turns out you're her kid’s dad. It only took that sentence to rock Sam’s world.