I feel the same way about being able to judge people just by looking at them or talking to them once. When I first met my ex I really don't know why I took my better judgement and threw it out the window. I knew just by looking at him that he was trouble. And then when I knew he was trouble I kept going back to him after breaking up with him multiple times...because of my Borderline Personality Disorder. I am not officially diagnosed with Social Anxiety Disorder but my Psych said I have it. Gonna see my new Temp Psych on Monday and see what they think.