Story Idea Question

Main Question
When do secret admirers turn into stalkers?

Plot Guideline
Person A works at a company and keeps a journal on hand which they write in every day at lunch. The journal is invaded with reviews from an unknown source, Person B, writing in handwritten notes which are placed within the journal through the night.

Here is the question I could use some help discussing. Should person A be pissed or excited about receiving reviews?

I'd be pissed. I don't want perfect handwriting annotating my story and reminding me YOU NEED TO WORK ON YOUR PENMANSHIP. Also, MY JOURNAL. I'm territorial.

That's not cool.

Personal, handwritten journal? I'd be ticked. Also, I'd find it incredibly creepy and throw the journal out as fast as possible.

Now, an online blog or something? That would be a whole different story. On the Internet, it wouldn't feel so personal, or threatening. It's one thing to get comments from someone who might be halfway around the world, and quite another thing to have someone close enough - and stealthy enough - to write on your personal journal. Just my thoughts.

Ah, that would be a much better premise, getting reviews on a blog they keep. It would take away the chance of the other person being close for a long time until person B messes up and comments about some proximity thing. I like that a lot.