Why did he avoid looking at me when I dressed up nice? Did I mistake his interest?

A guy has been a bit flirty with me at my job. I decided to dress up cute bc it was my birthday. He’s usually close or trying to get near when I’m dressed plain

but when I dressed up he was def trying to avoid looking and his energy was different. I felt a bit embarrassed tbh

what happened?

Why did he avoid looking at me when I dressed up nice? Did I mistake his interest?
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