Broke up and its eating me from inside...

I (27M) had a girlfriend (22F) for 2 years who I thought was marriage material. We had great chemistry, laughed together, and she was attractive and smart. We broke up 2 months ago because she distanced herself and disrespected me in the last 3 months of our relationship. She criticized me for not going to the gym daily or partying every weekend, and said I wasn't on her level. Also, according to her, I am not man enough. She didnt apologize but said she told that because she wanted me to get better.

I'm respected in our community, have a great job with a good salary, and always planned creative dates and trips. I'm tall, in good shape, and close to getting a PhD. She insulted me about my ambitions, despite being a student herself while I paid for everything.

I initiated the breakup. Three months later, I've been on multiple dates, but no one compares to her, especially to ours chemistry in begginings. Her birthday is coming up soon. I haven't heard from her in 3 months. Should I send her a birthday text? (If i want her back)