A LuRe fic inspired by
The Break-Up where Reid and Luke own/rent an amazing apartment/house and each refuses to move out when they break up; thus, they're forced to move on with their lives while still living together. Or it doesn't necessarily have to be that they're stuck together because of a living arrangement; it could be because of anything else--you decide!
It'd be fun to see they guys antagonizing one another to drive the other out or to see how they'd behave if one of them started dating again and brought the guy home. This could be soooo much fun!