Gordon Walker, a vampire hunter who lives in a world of black and white, no shades of grey, meets up with the Winchesters while they are investigating two human decapitations and cattle mutilation in the town of Red Lodge, Montana. Dean still doesn't know how to deal with John's death, so he acts scary, childishly, angry and irrational, that Sam has to step up acting like an adult and watching over Dean for a change. Dean befriends Gordon but Sam is uncomfortable with that. He sees Gordon as bad influence and he doesn't like the way Dean is acting around him. Meanwhile Dean confesses to Gordon that John's death left a big whole inside him and that he is not taking it very well. But Gordon made two big mistakes, first he tortured Lenore which was wrong in Dean's book (only later we see him do the same thing he hated and you see how much he had changed), Second he made the ultimate mistake jeopardizing Sam's life.
When the idea of non evil supernatural beings hits Dean, he is still hesitant about it since it goes against everything John has taught him. But deep down he knows he can trust Sam.
"Blood lust" is when the image of John began to crack in Dean's mind. He began to question what he was taught and started to trust his own judgement on things guided by Sam's conscious. It is when Sam began to act mature and embrace his life as a hunter rather than just complain about it all the time. It is when the brothers learned to lean on each other and keep each other from going to the dark side. It's when they learned that life can be grey sometimes.
When the idea of non evil supernatural beings hits Dean, he is still hesitant about it since it goes against everything John has taught him. But deep down he knows he can trust Sam.
"Blood lust" is when the image of John began to crack in Dean's mind. He began to question what he was taught and started to trust his own judgement on things guided by Sam's conscious. It is when Sam began to act mature and embrace his life as a hunter rather than just complain about it all the time. It is when the brothers learned to lean on each other and keep each other from going to the dark side. It's when they learned that life can be grey sometimes.