They do want one-on-one time with me, no matter what happens. We all value that, so why would this change if they got together?
Wanting one-on-one time and being able to achieve one-on-one time can, unfortunately, be different things. Adding more people can certainly put pressure on each person's capacity to achieve their desires in this respect.
Some of the fear around this could stem from an awareness of this pressure, too. I think that's fair enough, and something to watch.
Really glad you're finding your way through the dense emotions around this issue, Mya! It's interesting how other things (like your experiences with Noah) can unlock parts of it for you, too.