Ex coming back after 6 months

I always go to Reddit to find different opinions on my life. Thank you, to everyone who has ever helped me. My ex now came back after 6 months, but instead of feeling like I won or like happy, I just didn’t feel anything. For context, she changed me for her ex, but not totally. She claimed to love me and then just dropped me and I found out she was talking to her ex. Can I confirm that they didn’t date? Yes I can, but still she dropped me and now found out things just did not work out. When I was trying to “fix” things I sent her many audios telling her my feelings which she shared with her group chat, something that pained me deeply. She hurt me a lot, and at the same time I know she technically did not have bad intentions, but actions matter. What do you believe of all of this? I hate that my mind still goes back to this a lot. It would help if you just struck me out of the illusion or tell me your honest opinion on this kind of stuff. If need anymore information to make confusions feel free to ask, thank you.