Social Delemma

Thank you all so much. I was just worried each would find out that I am in touch with the other and think I was going behind their backs..!
Thank you for your thoughts and taking the time to respond

Separately definitely unless you have more information and don’t ask

Yes BlueBelle has it covered.
Enjoy your coffee meet ups.

Exactly what Bluebelle has said.
Their relationship is none of your business and the invitations to meet up for coffee are separate invitations!

Do they post on Facebook or similar? If they do then you could probably get an idea from their posts if there is ongoing contact between them. If that course of action feels too much like spying then try phoning the one you know best and ask her the questions you posted above

Good advice from BlueBell

I wouldnt necessarily ask them about their relationship. Depends whether it naturally comes up in conversation or not.

I dont think I would say you are in touch with the other sister. Unless, again, it comes up in conversation.

I wouldnt suggest you all three meet up.

I don’t think you should ask anything
meet them on separate days to save any discord unless they offer different