What do I do after this?

I just got back from a little get together, my girl best friend of 10+years was also there.
She’s been single and me too.
Towards the end of the night we were sat alone and she was showing me her earring, making sure my head got close to hers.

Now nothing happened, but i just got home and she texted me: you could have kissed me, you know?

Now I randomly think about how she was taking breath mints all night and how she barely talked to other people.

Anyone have experience with this, because i think i might like her too but also our friendship is super deeply rooted. But I begin to question if it was truly ‘just friendly’

What do I do after this?
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