Sam loves Dean, and Dean is super overprotective of Sam because he loves his brother right back :) it's what family does. So if anyone says that Sam doesn't love dean as much as dean loves Sam just read this post
Destiel is so a thing! It's like the Titanic but imagine instead of them loving each till the end, Jack dies below deck and Rose marries that abusive jerk. That's what the writers are doing to this beautiful relationship!