You've done a great job of building the mystery behind Reid and Max. If we don't get their story in the near future, there will be mutiny. Mark my words.
This is a chapter of progression. I love that Perry fell asleep in peace, maybe for the first time ever? Then woke with a frantic message from Kyan. Not because he was in any trouble, but because he was receiving proper affection from Jed and it was overwhelming. I thought it was fitting. The family joining together, with Jessica being her normal oldest sister self, was also fitting. No one made a fuss over Perry and Kyan because it's how it should be. Everyone in the family had been waiting, and now it was here and they were all happy, as they should.
I think the "I want" conversation was perfect. I agree with @84Mags it felt very much like a private exchange of vows. I see them having a very lowkey ceremony. Getting married for a second time, to the sibling of your first spouse, is weird. Even if Kyan was destined for Perry, it's weird. It would be weird to have a big ceremony and invite all the same people.
I think Kyan is going to find his own success. He is going to find his independence while being part of a thriving partnership.
This was beautiful. Can't wait to see what you have next.