Things your memory does to irritate you

Don't you hate it when you totally recognize someone, you know that you know them, they know they know you, but you have no idea how or where? There is a girl in my sociology class who I am having this issue with. Since day one of that class I knew I knew her and I confronted her about it today. She said she also feels the same way since day one of the class. I was shocked to find out she is only 16! We passed some info back and forth but still never managed to pinpoint where we knew each other from. When I was in the shower just now I was thinking about it some more and I think its possible that she was in the Afterschool program that I worked for back when I was in highschool. I need to ask her about that! I mean, there is a 7 year age difference between us. I used to teach the third graders but you kind-of knew all the kids in the program after a while. And if she was in the 4th grade, well then I knew those kids too. Or she could have been a sibling of one of the kids and would pick up her sibling sometimes. Gyah I so want to talk to her about it! Unfortunately I won't be seeing her until next Monday. If I can't figure out where I know her from than I am going to assume its a past life thing. Ahh and it is going to bug me alot! Ahh and there are so many tests that are coming up because next week is the last week we have before Spring Break. The teachers love to pile on the tests before we go. They have good reason I think. Nobody wants to come back for a test after having a break!