In the Afterlife?? I’ve always questioned everything looking for validity of what’s in question and I’m now at an age and time in my life where I do it very deeply and seriously. Regarding everything that this query asks; will we be reunited with our spouse and what if we have more than one spouse??? For me; to be blunt; absolutely no one knows what lies beyond this life, NO ONE. For those here that know me, I have (some time ago) previously stated that, despite the sceptic that I am regarding coincidences, I’ve had several incidents, when, and after my wife died that after trying to disprove them, I could not. But the fact remains that regarding all things spiritual etc., that none can be proven or disproved. That this may sound like I’m agnostic; actually I’m not. No matter what I can (or anyone else) prove or disprove, I can only say that after the incidents I had, that it appears to me that there’s more going on with our actual “conscience, spirit, soul” or whatever you want to call it, after we die, that we will only know when we cross that threshold ourselves.
As far as the spouse(s) issue goes, for me, that’s easy. After fifty plus years of marriage there is not, cannot, nor ever will be another. She is irreplaceable......... Of course, much of this this is just my opinion.

Thanks BrokenGeo. You sound like your skeptic self may have met with some interesting experiences. I won't intrude in a public forum by asking what they were, but I am very curious and if you are up to pm-ing me I would be grateful as I am grasping at this point within my own grief.

What if the new love/relationship is also a widow/widower?

Upon death, one can reacquaint with their loved ones, while the new love/relation's loved ones might be thankful to you for opening up your heart to this new love/relationship and for taking care of his/her earthly challenges and needs. When the new love/relationship finally joined his/her (before you) loved ones, your loved ones might be thankful to him/her for opening up his/her hearts to you and for taking care of you and your earthly challenges.

And vice versa.

A survivor survived (with or without guilt) to help another survivor survive, so both can make this earthly journey a bit more bearable to finally reacquaint with their loved ones. So, can 4 such individual spirits be squared into one circle of love?

I am a widow who married a widower, who also left this world a year ago. I have had the same questions. My other husband was also a widower (plus divorced numerous times). That puts 9 people in the circle or square, whichever. If I count my ex-husband and his wives (and I have my own opinion about where they are going), that would add 4 more to make 13. That really is an unlucky number. It would be a bit scary to reunite with all these people, and if you wanted to pursue this even further, you would have to include the spouses of all my husbands' wives who remarried, etc., etc. I think we are free to pursue other relationships without being shamed by others, but I also realize that some will not take that route. There is no shame either way. I personally hope to find love again, but I want it to be at the right time and with the right person. I don't believe the departed are looking at us through telescopes to see what we are doing.

I suppose if someone remarried or divorced someone, they are already saying they are looking for someone else to reacquaint after life - we can put them on someone else's tab (or square or circle).

That leaves the person you stay committed to until it was involuntarily disrupted. So if that person was a already a widow/widower, he or she will reacquaint with his or her (before you) loved ones, and you will still able to reacquaint your (before him or her) loved ones.

That way, the number is always even. If the 4 or 6 or 8 person do not wish to square into a one big circle, smaller circles among them should not be unthinkable.

This is just a paper exercise to try a simple answer to the complex question of squaring circle. It does not take into consideration anything else, nor shame, nor love, correct timing, right person or the use of telescope.

Of course if zombies are involve, then the 1st thing to ask is ; is that still "life"? Answer to that might help with decision whether to pull the trigger.