Hello chickenorth: I see this is your first post here on PC. So... welcome to PsychCentral!

I hope you find the time you spend here to be of benefit.
I don't know as there would be much I could offer with regard to your particular concerns.

What I would likely do in a situation such as this would be to simply assume these relationships are over & move on. If, later on, one or more of the folks reappeared... fine... I'd take it from there. But that, of course, is just my personal opinion.
Having written that, here are links to some articles from PsychCentral's archives that may be of some interest:
https://blogs.psychcentral.com/gentl...r-not-to-quit/
https://psychcentral.com/blog/archiv...with-a-friend/
https://psychcentral.com/blog/archiv...ship-break-up/
https://psychcentral.com/blog/archiv...with-a-friend/
I don't know, of course, if you're here simply seeking advice with regard to this particular concern or if you plan to hang in here with us.

However, should you be planning to continue on... may I suggest you introduce yourself over on PC's New Member Introductions forum? Here's a link:
https://forums.psychcentral.com/new-...introductions/
There's a lot of support that can be available here on PC. The more you post, & reply to other members' posts, the more a part of the community you will become.

Plus there are the chat rooms where you'll be able to interact with other PC members in real time (once your first 5 posts have been reviewed & approved.) So please keep posting!