So, old classmate class of 2005 was working at a CVS pharmacy by my house 4 years ago. I saw her and recognized her face but she did not remember me at all. I don't blame her since we really never talked to each other in class and she sat on the other side of the room. Anyway I just went ahead and told her that her face looked familiar to me then went on and asked her if she went to x high school. She said yes then I mentioned that we were in the same physics class with x teacher but she didn't remember. She kinda made a face expression like "that's weird" why should I remember someone I didn't talk to kinda thing. I was like whatever and left. I went back few more times afterwards to get some things I needed and I also wanted to see her again and one day she was gone. Left the job and I didn't she her again. That was around 2009. Then I just kinda forgot about her and let it go but few weeks ago I find her again working at a Hobby Lobby store that's by the school I go to. I pass by the store all the time and I can't help but to think about her. Anyway that day I found her there I was a little surprised and I was standing in line looking side ways and she was just staring at me when I turned around she quickly turned away and pretended she didn't see me. She didn't try to look at me again and I was like forget it she probably don't want to talk to me. She did recognize me this time after 3 years or so and I still seem to have feelings for her which is crazy and I hate feeling this way because in the back of my mind I just come with my own conclusion that she probably doesn't like me. I get a little blue and just want to go back and ask her out or something but I feel weird. so is it normal to have feelings for an old crush you never met before? Should I let it go or go back?