Hugs to you, I’ve done this before too and then regretted it, thinking back it’s happened when I’ve been overwhelmed by things and I haven’t been thinking straight. Try not to beat yourself up, you’re only human.

I like the idea of speaking to the friend and explaining why you feel you shouldn’t have shared as much and apologising. Hope all will go well and your friendship won’t be jeopardised by this, I think it’s good you recognise what you’ve done and the impact it can have - some people don’t have the awareness to realise when they are over sharing and being indiscreet, that’s when the real damage is done imo.