I wanna move on but i miss her sm

it's been a year since we broke up and I still can't move on

A few months back, my ex called me by “accident” and then messaged me to say sorry that was an accident. I didn’t have her number saved, so I asked who it was. She told me, and I left it at that. I also saw her a few days ago (for the first time in a year) at a store she was working at and idk it brought everything back

She’d already messaged my friend before, asking about me and even wishing me a happy birthday indirectly. I started wondering if she still has feelings but at the same time I'm hurt because after we broke up, she humiliated me in front of everyone by positing a story saying "in his stalker era." She later told my friend it was because others were putting stuff in her head but that never felt like a real apology lmao

I know I wasn’t perfect either. I messaged her friend behind her back for advice and constantly questioned her whether she liked me. I can see how that hurt her too but I just don't know what to do anymore. I miss her so much man. I don't think a day has gone by where I havent thought of her since the break up