My ex girlfriend (28F) and I (29M) reconnected after 2 months after breakup. But she is hot and cold.

Me and my ex reconnected and we have met up 3 times. All the “dates” went great. We enjoy each other’s company. The 3rd date was the best out of the 3. We spend 2 days together, eating pizza by the pool, watching romantic movies while cuddling, went for karaoke for 4 hours and even had sex.

We also started texting a bit more often and played video games together late into the night while on the phone. But last feel days, she start responding less. When I call her she wouldn’t pick up.

Yesterday morning, I asked if she would like to have dinner together. She did not reply for the whole day. And when I called her, she declined and reply via text that she is not at home. Of course that upsets me as she didn’t text me to tell me she had plans already.

She then asked if I’m okay. And I told her I’m okay, just thought we could spend some time together. She ignored and started ranting about her mum. I send a few advice and she went ghost again. I called her a final time and she declined. It’s been nearly 6 hours, no call or replies still.

I’m confused about this situation because I thought we were rebuilding our relationship. She even told me we are in a better place now but she felt that she is a bad influence
To me.

What is your advice on my situation?