It can be platonic, familial, romantic, anything.
I’ll start: I recently moved in with my boyfriend, who lives with his wife and their son. They were already separated when we met, but his wife doesn’t want to divorce or move out, and she wants their son to live with both of them. My boyfriend agreed to those terms.
So now I’ve found myself in a pretty unusual situation…
OP, how is this not incredibly awkward?!
I think it’s because neither of us sees the other as an enemy. Plus, it’s a nice, big house in New Jersey, so it doesn’t feel crowded.