Responding here because this is my favourite part of your whole post. (I can never get enough of these hyphenated adjectival phrases.)
if you give someone else all of your heart,
what’s left for you?
I’m sorry you’re in a place where you can’t feel safe as you fall;
I’m delighted that you’ve recognised that, and you’re protecting your heart for now. It’s a good one. Look after it, okay?