It’s a really really really toxic relationship where one or both parties are getting really fucked mentally or emotionally or all at once to the point they might lose their self-identity
Guy 1 *Standing in front of a mirror*: do I even exist?
Guy 2: Have you been in a fuckuationship lately?
This is a situation where any available option chosen leads to an undesirable outcome. Most of the time caused by a dumb bitchgirlfriend who wants you to do something with her instead of your buddies. You can have fun with your buddies and she will bitch or hang out with her and she bitches anyway. Neither option will please the other party involved.
Man, this new bitch has had Kyle in a fuckuation daily. She’s sucked the will out of Kyle he’s been in a fuckuation so long. We never see him anymore and nobody’s happy.