The thing she look forward on going to workplace was her best friend from college who also became her best friend in work. Same department and room and all that jazz.
The thing about having your best friend in the workplace means that she would be the first person who hears and also knows who's and what's going on.
So, when she had a crush on him, her best friend was the first person she went to for advice and ranting about how awesome he was.
Her best friend whose name Dita, once knew what's going on with her best friend, start to look up on his Instagram and followed him. Her stalker mode: ON.