<human>: I am a 23 year old male and I met this 20 year old female this last weekend.  I asked her out immediately, we got drinks the next day.  Overall, we seemed to hit it off.  I asked if she would like to get dinner the upcoming week, she agreed.  I really like this girl and I haven't been in a relationship in about 5 years so I'm a bit unsure of myself.  I was going to call her tomorrow and ask her if she wants to go out to dinner Saturday.

I guess my question is just how do I transition to actually being in a relationship with this girl and how do I get over this anxiety about it?  After the date I had a lot of insecurities come out.  She's quite attractive and I question whether I am good enough.  I'm also kind of short 5'6, and she is about my height.  Usually I am quite confident and it's easy for me to flirt and do whatever without feeling insecure.  As soon as I like someone, it feels like all of a sudden I'm inadequate and am going to fuck up.  I really am afraid I am undesirable, unlovable, unacceptable, etc.  I don't really know if I am explaining this well so let me know if I can fill in details.

Can you provide a brief overview of the text?
<bot>: Usually confident guy has successful date with girl and is now struggling with insecurities, self-esteem, and fear of rejection.