It's been a long time. I'm not sure why I occasionally check social media. Conventional wisdom says I probably should not
i occasionally check social media
i occasionally check social media for lots of people...exes, people i went to school with, people i dont like and am not friends with, but remain curious about...
theres nothing inherently wrong with being curious and checking up.
I'm seeking confirmation that a person could actually be so disconnected from the average perception of reality
it does sound like theres something in checking for you...a wound that lingers. seeking confirmation can be a way of hanging on to that wound.
I fell head over heels quickly...within 4 months we were engaged...talking about marriage early on...and setting a wedding date just 6 months later.
see how easy it is to be disconnected from the average perception of reality

kidding aside, heres the thing...
all of us (most of us?) are out there searching for our soul mate, our forever love, to give our lives to.
at one time, you thought you had met her. at one time, she thought the same.
you had a brutal breakup. one that would leave anyone struggling with feelings of insignificance. seeing her get in fast moving relationships, that probably, on some level, nags at those feelings, because the mind tends to think "so she does this with everyone, i wasnt special". and maybe theres a hint of pay off that it doesnt seem to work out with them either, but that doesnt really help.
maybe you both were special to each other (a first love who takes your virginity always will be)...just not as significant to each other, in the long run, as you thought at the time.
These relationships may work out sometimes...but why wouldn't we want to find someone who can reciprocate a healthy connection? It's a good question.
My former pastor always said we never hear about good marriages because they are boring and no one gets TV/ratings from boring. Now I know what he's talking about. Find someone who is "boring" (meaning "healthy" for me) and grow a healthy connection that can weather the storms of life (or even normal life.) I think our society places too much value on the romance and lust and not nearly enough on seemingly dull straight-up plain old commitment.
at the end of the day, it sounds like you want different things than she does. maybe you always did.
keep reaching for those things.