Reading this has me thinking of things like
Brené Browne's talk on vulnerability and some of her other work.
It is a huge risk to be vulnerable like this with somebody. You really can't know that somebody is trustworthy like that without taking that leap of faith.
My closest friends are people I've been vulnerable like that with. Some of them I had been supportive of first, before I asked them. Others I chose to trust for who knows what reason, maybe intuition, as well as a bit of history, but not that I could say I was "owed" it in any way from prior support I'd given.
It is really easy to talk yourself out of being vulnerable like this. I think it took me being knocked way down to do it--first when my marriage had turned horribly abusive (which it recovered from), and second when my marriage was ending.