I think this is Bobby's POV. Although you don't have him thinking in his dialect, it just feels like him. But then, maybe you don't want it to be anyone specific, so we're left wondering. It could be either of the three - Bobby, Sam, or Dean.

Aw, that's so sad. I loved it though.

*Sniffs*

So very sad.

This sounds like Sam's pov.

This is so sad. It's something they just don't have time to grieve at this point in the story but I don't think it's going to be put behind them easily.