My separation lasted about a year prior to my divorce and my divorce is now 4 years old. I did have a serious on-and-off again beau, but that ended over 3 years ago.(That is QUITE the story — I almost died! That relationship literally almost killed me.) A few near misses since then, but mostly single city for moi.
I think you’ve hit something: the length of time of being single can take its toll!