I wouldn't say our living situation is unusual, more so mutually beneficial. My partner's sister is a single mother, and California is expensive. The four of us (she has a son) live in a 2 bedroom apartment with 5 cats.
It's a little cramped, but it made bonding super easy and fun (sister and I are only a year apart which is neat), and it's nice to have people around (but sometimes, I just want it quiet, lol). His sister will be moving in 6 weeks time for the military, and will be taking two cats. I will miss her, but I am ready for more space, more quiet, more peace, less mischievous cats
.gif "Say What?")