Hi Rhapsody

:
Please forgive me for wandering into my own verbosity and not addressing myself to your specific question.
What would happen if you unblocked the person, and just let them keep you blocked or not depending on what they want to do/their own stuff/issues?
Sometimes, if we feel we are ready to lower our defenses, others will do so in kind. You'd of course need to decide when you feel ready to lower yours - only you can know when or if that is appropriate/a 'good thing'/healthy for you, and then be willing to 'let go' of any anticipated outcome and see what happens, (not taking the ultimate outcome personally no matter what it may be).
Maybe try it with one person...
What do you think?
Warmest regards,
Peanut