When moving in together, we all agreed to have our own separate rooms to retreat to if need be.
When picking out bed sizes, I was an advocate for someone having a huge bed, so we could all cuddle there if we want. Mydei also seemed fairly keen on that, and Phainon backed it up too. Anaxagoras didn't much care, but essentially said "do whatever you want, though I'm having a single bed." In the end, Mydei ended up getting the huge bed, enjoying large and grand things.
That left me and Phainon, who were both debating single or double. In the end, we both went with double.
However, Phainon found it a little lonely to sleep in a large bed on his own. That started a habit of him often sleeping in someone else's room, or dragging someone back to his.
I admittedly also now end up frequently sleeping beside someone else (often Phainon), (often Mydei too), (all three of us in Mydei's bed), simply because I find it super cozy and warm to be with them. Though sometimes I am overstimulated and can't stand the thought, retreating to my own room to sleep alone for the night.
Occasionally, me, Phainon and Mydei manage to lure Anaxagoras into bed with us too. He might grumble, but he always melts when surrounded by our embrace.
I also love sharing Anaxagora's bed. Since it's smaller, we pretty much have to be right up against each other. We rarely actually sleep like that, unless one of us sorely needs the comfort. It is also not something that happens too often, as Anaxagoras usually isn't in the mood to be smushed up against someone else for an extended period of time.
Sleeping beside just Mydei in his bed is also something that happens, though admittedly, it almost always leads to sex for some reason. If I want to sleep with him without it taking such a turn, I have to either find someone else to join us or pull him into my own bed.
Me and Phainon also frequently end up in each others beds, whether to cuddle, chill, sleep, or turn up the heat.
Fun and unexpected sleeping arrangements have also happened, such as Phainon dragging everyone into Anaxagoras' bed (not enough space) (smushed together) (Phainon was laughing) (Mydei also found it fun) (Anaxagoras was not pleased) (we did Not end up sleeping that way)