<human>: Give me the gist of the text in a nutshell

I'm a senior in high school, and I started to really like this girl who helped me work on my college applications. I've known her throughout high school, but only recently got to really know her. She never wanted a relationship in high school, I knew that, but as a thank you present I took her out to a nice dinner and to see the Book Of Mormon. I told her that night that I had feelings for her. 

She told me she just thought of me as a friend, nothing else, and that I was one of her best friends. She said there was no point in starting a serious relationship with only 8 months left in high school. I agreed, and we were fine from that point on.

But we have started hanging out more, and I realized a few weeks ago, that I'm in love with her. The fact that I can't do anything about it is eating me up inside. I've become way too clingy, because I always want to hang out with her, and I know she finds it a little weird. I've been a lot angrier lately, lashing out at random things for no reason, and I have no idea what to do.
<bot>: I liked a girl, she said lets stay friends, thought it was a good idea, fell in love with her afterwards and now it's eating me up inside.