Girliesss I need help again 😭😭🙏🏼 there's any update

Okay so I need some female perspective (used chat gpt)

My ex and I started talking again last month after about 4 months of no contact. We had fallen out because she believed some rumors about me, but later realized they weren't true and reached out to apologize.

While talking, she asked which movie character reminded me of her, and later said characters from Fitoor and The Notebook reminded her of me. Our conversations were good for about a week, but then I felt a slight change in her energy, so I stopped texting first. What's confusing is that she never texts first, but whenever I text, she's usually nice and engaged.

After around 10 days, I wished her on her birthday. Recently, I texted her "hey," she replied after some time, then after some time I asked "wassup?" and she hasn't replied for 3 days.

Also, a lot of people assume I'm in a relationship (I'm not), so I'm wondering if she believes that too and maybe that's why she's ghosting me.

Is she interested but hesitant, does she think I've moved on, or is she just being friendly?

TL;DR: My ex reached out after months of no contact to apologize for believing false rumors about me. We started talking again, she asked personal questions and even said characters from Fitoor and The Notebook reminded her of me, which made me think there might still be feelings there. However, she never texts first. Whenever I message her, she's usually warm and engaged, but recently she replied to my "hey" and then left my "wassup?" unanswered for 3 days. A lot of people around us think I'm in a relationship (I'm not), so I'm wondering if she believes that too and therefore not texting, does this sound like hesitation, loss of interest ?