I never said you couldn’t call him your favourite person and if you’re in pain I wish you nothing but the best. But just summarising again (in short because I’m rushing) your ex cancels plans last minute (because of a ‘meltdown’ - mental illness) and you finished the relationship. This will most likely happen again so you will most likely finish again.

Alternatively, get back together and state you will never plan events for him going forward? But personally, if a relationship ends I never go back…

“It is always time and effort better spent developing new, fresh, prospective partner than it will ever be in attempting to reconstruct a failed relationship. Never root through the trash once the garbage has been dragged to the curb. You get messy, your neighbors see you do it, and what you thought was worth digging for is never as valuable as you thought it was.”