Since I never really got back into writing, Prompt time!
What if there was a story introducing an inseparable trio? They all met having to share rooms and being roommates, housemates, whichever works.
But the problem is they never got a long at first impression, one was a neat freak, the other a dirty litter and the last was a open-extrovert.
They've had their arguments, dealt with issues and what not but slowly and surely got to know each other, Silently observing one another and discovering their common interests. Y'know, Opposite attract.
So they got close to the point of no longer planning to move and are attached by bond, build up stories on what it was like living together, celebrating holidays, birthdays and plannings.
It all comes to the point of adulthood where they separate happily with partners, create a family.
But even at such age, When they're together, they were reminded back of their days together and never changed behavior to one another.