So when

My question today hell for the rest of my life is "when will an ex not be an ex anymore" as in if you haven't dated a person in 6 years is that still considered your ex, when do you stop "claiming" them or is it only when convenient to block? for example Columbus is only so big, ppl are bound to date each others friends and ex's at least once, unless your an importer, LOL but ok so when do you stop claiming someone that you haven't talked to in a year and counting and haven't dated since high school your ex, how about we just say we were really close friends, or we used to date, she's a good girl, why do the hands off approach like you know that's my ex right, as in hands off, when both have you have moved forward and haven't looked back, at least on my part, I'm just curious, as to why hold on to something that neither one of you no longer have, or want, and mutually let go of?