Can someone please help me with this girl problem its kinda long but i need help?

I liked a girl last summer and we talked a lot. When the school year started we kept talking until she hooked up with some dude. I was really pissed and wedidn'tt talk for about 4 weeks. Shetext edd me one night and we started talking again but nothing happened and now its been about 3 or 4 months and we havent talked at all. I requested her to be my friend on face book but then deleted her as my friend about a couple weeks ago. But last night she poked me and we are not evenfriendss. WE seeeach otherr at school and look ateach otherr for a good 5 seconds or so but still havent talked, I also told her i wouldnt ever talk to her as a friend. So how should io talk to her in person and what does the poke mean?