Most Helpful Girl
Because whatever BS, misunderstanding, personal issue , family issue, outside issue etc that caused the break up in the first place was strong enough to make one or the other decide they needed time apart physically while mentally still being attched and figuring out a way to fix it to be with that person even if they call themselves "dating" "looking for someone new" "peacocking" it's just to pass the time they have no interest in those on that level and will get that person til proven there's no chance it will work.
As for those who hold on half the time it's due to more and more negative crap popping up. they start to realize, analyze, and question everything, every moment, every phrase utterd to one another (sweet nothings) , if you were relevant to them, til the whole situation becomes a poisonous lie and a waste of each others time, you feel abounded used n foolish , abused mentally (mind fcked). They can't even look at that person let alone attempt getting back with them.
All a assumption of course