Andy I’ll tell you something that happened to me a month ago, might help you to feel better.
I’ve had quite a rough break up, as I said, 4 months ago. Story was very long, but in a nut shell, I had broken up myself and then regretted. In multiple attempts to mend it and try to get back with him (we were doing long distance) I was near his town and asked to see him. We hung out together and it felt like old times. Gave me a lot of hopes – until a couple of days later I found out he was seeing…his ex, the one before me. So he ”cheated” her with me. Yes. Andy, I feel like I’ve lived a lie for the 2.5 years I had been with him. But it only made me realize he is not the person I want to be with and I forgave myself and felt a huge relief.
So she’s not the person you want to be with. If you feel lied to. No one wants that. Relationships have to be built over TRUST.
Get better!!