<human>: Provide a brief overview of the text.

The girl was in my course last quarter. I didn't have enough guts to talk to her until about a week or two before finals week when I realized it was now or never to make an attempt to get to know her. I tried at one point to see if she would like to hang out. I didn't get a definitive answer cause she was in a rush to catch the bus. She told me to add her on Facebook. I eventually did. I also ran into her a second time during finals week but didn't bring up the fact that I wanted to hang out because the following week was Spring Break, and I assumed she was going home before the weekend.

Anyways, since then, we haven't really talked. Maybe once or twice between when I ask her if she wanted to hang out and now. I tried messaging her on Facebook this past week since we don't have any courses together this quarter. Thanks to the awesome Facebook technology, I saw that she had seen the message but ignored it. Now I immediately took this as a "I'm not interested"/"I don't want to talk to you" but some of my friends say it's my fault cause all I said was "Hi" and wasn't direct with the fact that i wanted to start a conversation.
So are they right? Did I go about this the wrong way, or am I chasing someone that really might not be interested. I don't really know her, but I would like to get to know her. Should I make another attempt to talk to her?
<bot>: Met girl last quarter. Told me to add her on Facebook. I did. We talked a couple of times, but she ignored my last attempt at a conversation. Should I make another attempt or is this a lost cause?