People say 1st impressions matter most in judging a new person.Although I don't agree with it in whole I do think that there is some relevance of first impression in this present materialistic world where you are a product and the sales person too wooing others.
Well in all my experiences with new people, I must say the relation ship which develops between two individuals depends more than the first impressions.It depends on the various other factors like the pre conceived notion about a particular individual, which I think we have on every one.The outcome of that particular meeting may be positive or negative on what the other person had in mind about the other before.Suppose if you r going to meet some one whom you thought was head strong,cocky but when the interaction changes your opinion I guess that would build a positive relation b/w individuals.