<human>: Can you succinctly summarize the text in 1-3 sentences?

I met this girl recently, and she's a very friendly person. First day we met at this party, she was extra caring and considerate towards me and wanting to know more about what I did. We exchanged numbers and connected on Facebook. I met her again after a few days she was as friendly as ever.
I want to ask her out, but I've seen the way she is in life - a really great social life, lots of those "cool" guy friends doing lots of those "cool" things. I did some stalking and feel that most of them don't have girlfriends, but have lots of female friends. 

I'm quite the opposite, despite being fairly good looking and confident, I don't like the idea of having many female friends and rather enjoy a male only company. I have few friends in general, and don't go out much unless it's on the weekends and that too for a few drinks and then back home. I'm more of a family type, and want to get settled down early. There are a few girls in my social circle but I don't feel very close to them. 

My problem is this: I'm afraid to ask her out because I feel she's too cool for me, or that the guys around her are too cool compared to me. I feel that girls like that with a huge social circle aren't ready to settle down and leave their guy friends behind. I don't know if I'm wrong here, but maybe the good looking types like her want to have fun till they are in their 40s and then have a family. Could anyone shed a light on this? 

If you think I'm being insecure, please say so. I know that I am being insecure but I don't want a heart break some weeks/months down a line because she gets bored with me.
<bot>: I like a cool girl with lots of cool guy friends and despite being good looking/confident myself I feel that I would not be cool enough for her because I have a small social circle with no cool activities planned for every weekend.