[blindmute]

This is a pervasive cope. Relationships, romantic and otherwise, are necessary for most people to be happy. "You're not ready for relationships until you're happy alone," is something people say that doesn't make any real sense. It doesn't indicate a personality deficit, either. It's completely normal and healthy to require relationships for happiness; pretending that this is some sign of mental disorder is a disturbing modern coping mechanism.

What's stranger is that it's rarely a cope for the person saying it. Instead, they are explaining away others' desires as unhealthy, while they often have those desires already fulfilled themselves. It's as though the speaker is uncomfortable with others being lonely and seeks to demonize it as a personal failing.