I Kissed My Ex Girlfriend, she liked It but still doesn‘t want a relationship

Hello, i have an ex “girlfriend”, we weren’t together but we loved each other. Its kinda complicated, she waited a year for me to make the next step to ask her for a relationship and then lost interest. I ran after her and was really needy and then switched to the 3 month no contact rule. In that rule she had a boyfriend but the relationship ended fast. It was obviously a rebound. After that we started texting again and we went outside together, we kissed each other for an hour and i asked her for a relationship, she said that she wants to think about that. We started kissing again and after a while she had to go home, she even gave me a goodbye kiss. And then we texted and she was really cold, showed no interest and said that shes not ready for a relationship with anyone. She still types cold. I don’t know what to do and how to get her back. Can someone help and give me a tipp, except moving on? I really want her back.