We ended things but both can't let go what should I do?

So for quick summary me and my now ex girlfriend ended things a few days ago, when we left physically we still kissed goodbye and we still text, it didn't work out after 3 and a half years but i can't help myself from wanting to keep trying, there's something different in this girl that i don't see in any other girl i've seen so far, she doesn't know what to do and doesn't want to keep her hopes up. I proposed to take that step back and see each other as friends, we still both have strong feelings and thought maybe ending things would be better for both of us but i really can't let go.

Of course i'm asking this to a bunch of fucking strangers on the internet but it's my first real relationship and i regret making the decision heavily. Of course we have our differences but we started living as friends when we did see each other the last couple of months. I can't help but think there's still a possibility to save what's left and move on stronger together but that might be delusions at this point i don't know.

I'd really appreciate some honest advice if no one cares it's fine eitherway i got to rant.

We ended things but both can't let go what should I do?
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