Amelie, my gosh....please don't feel it's your fault! Hey, maybe YOU could have been the one not answering calls or wanting further contact...for whatever reason. This does not mean the fella was wretched or ugly! And you are certainly not unattractive, hun!
At the age of 27, I just felt I HAD to find a man and get married. I felt much like you, insecure about my ability to attract a man. I met and married a coworker, knowing full well it was inadequate emotionally. Then I stayed for 20 miserable years. How much happier I would have been had I just found peace within myself and not been so anxious about forming a relationship.
I hope, for you, that you will just let this go. It seems you have put a lot of emphasis and importance on these couple of dates with this fella, and you are much more valuable than that!
Loving thoughts,
Patty