Can someone please help me with my heartache?

If you choose to read this, thank you.

Before I begin, it is important to note that I am sixteen.

First of all, I am not gonna lie, I have issues. My mom and I both have a severe case of OCD and other weird stuff like restless legs syndrome. However these issues weren't anywhere near as bad as they are now.

I am depressed from a romantic pursuit: there is this girl that I have liked for a few months. I never talked to her till a month ago, when I thought that she had a crush on me. However, I DID see her at some point looking at me like she was interested. Now that I am talking to her, she seems to avoid me and I can hardly talk to her. As a result, I feel very alone (not to mention sad). I also feel like I still have a chance with her, even though part of me says that I have screwed up really badly. She is very shy, and I do not know what to do. The fact that Christmas is soon here is also making me sad. Thank you for reading all of this.