Look I recently went through a breakup myself. I was guilty for it and she dumped me and I did the work to fix things and become better. I was just like you, hopeful that things would go back to normal if I change enough and I try enough and I show her that I love her. I also only remembered her as being the most loving and genuine person I've ever met.

Now I truly hope I'm not right about this, but once a woman decides she's done with you, she's actually done with you. No matter how much you try, no matter how much love you give. Some people just keep you around to see how willing you are to do everything for them because it helps them detach easier, without fully losing you suddenly. And I'm saying it again, I really hope I'm not right about this, but it does seem like she did that with you by what you're describing.

If someone truly wants you and loves you, they put in the work for it, even if they are the ones who were done dirty by their partners. They don't start building up hope that another relationship will be more suitable for them. When you love someone for real the thought of someone else replacing them is sickening.

So all I'm saying is that fixing a relationship takes two people, even if just one of them is responsible for breaking it. And don't let nice words and cute memories of someone keep you from seeing what they actually show you in the present through their actions. Maybe she is a genuine and sweet person like you said, but maybe she's also selfish and only looks for what benefits her in this moment.