Although I can't blame him for being rude given the circumstances either way, gotta be kinda frustrating to have someone else show up during your confession and basically hijack it. Even if he's rejected, at least let him get rejected first lol.
Nah, he included her in the confession by preemptively rejecting her assumed feeling for him, so she just did the same.
I'd be uncomfortable too, but in fairness, he's been visiting for two whole years and everyone seems familiar with him so I wouldn't strictly classify him as a random stranger in terms of relationship. It doesn't help that the employees seem to approve of his affections and the woman herself has apparently never actually rejected him seriously, seems quite easy for him to get the wrong idea.
She’s friendly with everyone. Everyone knows this. Sure she didn’t overtly reject him, but she also didn’t take any of his actions seriously, noted by “if it was any other woman, I’m sure she’d get the wrong idea” on page 13. Honestly, it just feels like the whole “she smiled at me, so she must like me” or “she nice to me, so she must like me” from a worker.