Dean always had a strained relationship with John Winchester because he knew John was under a lot of stress. He also knew John always looked at Sam differently than he looked at Dean since he was a boy. He always drew conclusions and made assumptions but never in a million years did Dean think his father looked at him differently because he wasn't truly his dad. Now with a paternity test in his hands, Dean is determined to find his real father. A man that goes by the name of Damon Salvatore.