Dating relationships exist in a quantum superposition until someone tries to measure them.
The "more than friends but less than boyfriend" zone is basically relationship purgatory where your status is fundamentally uncertain. Just like a quantum particle, your position in someone's life remains probabilistic until observed—usually through that dreaded "what are we?" conversation.
The Schrödinger equation shown here is actually perfect because it describes how quantum states evolve over time, which is exactly what's happening to your dignity while you're trying to figure out if you're allowed to hold her hand at the movies.
Pro tip: Unlike quantum mechanics, relationship uncertainty doesn't resolve itself. You'll need to collapse that wavefunction yourself, buddy. No equation will save you from having to use actual words.