Why is she acting weird?

His girl at work and i work in same department. She's kind of shy, and has flirt with me a couple times here and there nothing big. I always see her walking and talking with my friend. Like they're always out meeting each other in the hallways and talking. I've never seen her do this with anyone else. Flash forward 4 months, now I don't see them talking anymore at all and now she's been following me out to the parking lot afterwork and arriving at the same time as me and we are now walking and talking like they used to. It's so weird. We park in a different lot than him, but I thinknits strange how she's like all over me now: like chasing my attention or something. What is this?
Why is she acting weird?
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