In my experience, people who I have considered to be "charasmatic" had a way of making me feel like I was special, interesting, and that we connected with each other in a unique way, of course in truth they also connected like that with a lot of other people. They give the impression that they are fascinated by you (in a non-stalkerish way
). Because of this you just feel good in their company-- when they're around you feel like YOU have charisma.