Will guys dislike me because I'm down to earth and talkative?

I have awful self confidence when it comes to dating. First date is always great but second and third usually I think they don’t like me, so I distance myself from the situation.

Is this just in my head or is this the reality? The reason for me thinking this is, I have an assumption that generally guys fall for girls who are angelic, mysterious, hard to get, quiet… Whenever I open up and act confidently and based on impulses I feel awful afterwards thinking they stopped liking me. Is this all in my head or what can I do to fix this?