Since all my detachment, I've been wondering how long I'd have to wait to know.
Tidbit of helpful info from The Solo Partner.
It says on p. 201:
If the distancer has not started or has discontinued his new pursuit within 3 or 4 months of the pursuer's detachment, for all practical purposes the relationship is over."
I suppose I began my bona-fide detachment at the end of March (I think).