Have you ever felt this bad about yourself?

I'm a single 19 year old college student. A couple of days ago I met this girl and we seemed to get along great. She was everything that I was looking for in a woman. She had a really nice personality, a great face and body, and seemed really interested in me. I felt a mutual connection. Even though I'm not looking to get married any time soon, she seemed like perfect marriage material for me. So after talking with her for a while, I got her number. Then after we said our goodbyes, I was trying to place her number in my phone list and I accidentally deleted it. It was a total freak accident. Now I feel like total shyt. I can't look for her on facebook of google her since I don't know her last name. I figured that I would ask her that on the first date since it seemed like a sure thing. And she does not have my number. I haven't felt this terrible in years. And you can't tell me that if it was meant to be then I would see her again since I'm not an idealist. I'm a realist. She's an incoming freshman and was only at my college for one day for an orientation. She will take classes at my school a year from now. What adds to the pain is that I have never met any girl like her before in my life and it had been a long time since I was in a relationship. It had been years since the last time that I went out with someone. Talk about a huge slump. So have you ever felt this bad about yourself? Its not like a family member died and there was nothing that I could do about it. This entire mess up was my fault and I can't get over it.