When two mutual friends consistently cosplay characters in romantic relationships, even if one or both of the friends is in a relationship with a significant other.
A: So X and Y are cosplaying Hungary and Prussia, Eridan and Feferi, Sakura and Sayoran, and Faust and Eliza? Are you sure they're not dating?
B: Nope, they're just in a cosplationship!
B: Nope, they're just in a cosplationship!
by blueskiesforme January 27, 2012
Get the Cosplationshipmug.