Girls, why is this girl I like avoiding me?

Anonymous
This girl is my co-worker. She has always been friendly with me, noticing when I've shaved or changed something about my appearance and commenting. I have been quiet around her because I am kind of shy. Over the past few weeks I have noticed her staring at me when she thought I wasn't looking. Then the other day she comes up to me and tells me I have something on my face and touches my face to help wipe it off. She then comes back and offers me some of her extra food at lunch. We talk and I can tell she is nervous talking to me but it goes well and she smiles at me. Anyways, the next day at work I see her looking to see when I walk in the door to work. We make eye contact, but when I walk by her desk she turns her back and starts working. We had always said hi or smiled at each other before. The way it happened you could tell she was watching for me to make sure she could avoid a conversation with me. She then changed her routine to avoid me the rest of the day by eating lunch elsewhere, leaving early, etc. She has avoided me ever since and doesn't even acknowledge I exist. It became so uncomfortable that I avoid walking by her desk. She talks to all the other guys at work still. Why wouldn't she at least say hi like before? She's usually so nice. If she is not interested I would understand and still be friendly to her.
Girls, why is this girl I like avoiding me?
2 Opinion