A self-hating paranoia which is formed when one is having a satisfiying relationship, but is afraid to screw-up or wreck the relationship, resulting in fear and instability. Such paranoia often result in the end of a relationship.
"It's when you're in a great relationship, but can't stop worrying that you'll _____ it up or that it's gonna end somehow." -questionablecontent.net comic#254
I'm going out with such a great person, but it's giving me HRP.