<human>: Ok so I've known this girl since elementary school and now we go to the same university. We've always had mutual friends but I would not say that we were good friends, more acquaintances since we've gone to the same schools most of our lives. She used to be good friends with one of my best friends who's had a thing for her forever, and i dated her best friend for a very short period of time in high school, but besides going to a couple of her birthday parties and study groups over the years we never really interacted much. She's a pretty shy girl and doesn't really have great social skills, and has had a hard time meeting new people at the university because of it. She's always been friendly but in a more quiet kind of way, and we never hung out just us.

So in the past couple of months we ended up hanging out in small groups a couple of times and drinking, etc. She seems to be interested in my personal life here at the university and has tried to exchange numbers a couple of time but it didn't happen for some reason. She mentioned how we have things in common and think similarly. After the last time we hung out she had texted my friend saying she wanted to do it again some time, but i couldn't because of work.

This week a ran into her on day and she went out of her way yelling hi at me as she walked by. Then a couple hours later the same thing happened when i was walking by where she works. I went up to her to say hi and she was pretty awkward and seemed nervous, like she just kinda babbled and accidently saved her name without her number at first when i gave her my phone. I don't really get why she would feel uncomfortable around me, so I'm wondering if she might be crushing on me? 

Seems weird that she would be uncomfortable around me if she's brave enough to yell hi across the room at me. I've known her for a long time and i can't really remember her reaching out to hangout or being awkward before, so I figure she has a crush. Any thoughts?

Can you give me the gist of the text in a nutshell?
<bot>: Girl I've known most my life as acquaintance has tried to start hanging out with me, seeming awkward and nervous when she didn't before, and going out of her way to get my attention. Crush?