Dumped after 5 years

Me (24m) and the person I’m in love with (24f) broke up 3 months ago.

It was each other’s first serious relationship, where we shared our first kisses and etc.

As a begginner in this field, I’ve made many mistakes, the ones I would have never made again. But I was too caring, I never raised my voice, never micro-cheated (texted anyone,liked someone’s post to attract attention etc.), never called her anything bad. My only problem was some minor trust issues, which I overcame with time. Her friends did not like me at first, because I can’t get to know with people in a short time, usually it takes months for me to open up with people. Even when she was crazy in love with me she decided to break up just because I called her a liar once, we have been broken up for 5 months and she has been crying for almost everyday when we were no contact, I finally managed to get her back, doing my best. Since then, every small argument ended in her breaking up with me, I was always the first to apologize and she always came back, because I showed that she meant the world to me. I’ve introduced her to my family this year, we were going to move in together in a few months . This summer, we had a small argument and she told me that I’ve hurt her many times and she did not want to have anything with me. She is very angry everytime she sees me and tells me she has no feelings. I’ve tried many romantic things to show her how much I truly love her but she refuses to give me any chance. She told my sister 2 days ago that she still loves me so much but she just can’t forgive. She still reposts things about us and trying to get my attention only to act distant again.

I love her so much, have never experienced anything like that before.

Please share your experience.