**Love ($F_{\text{Love}}$):** Love is measurable as the degree of coherent integration between an agent and other agents/systems. It is the fundamental relational coherence metric.
Where \hat{I}_{AB} is the mutual information operator between systems A and B:
And \hat{D}_{AB} is the distinguishability operator preventing identity collapse.
Definition (Love Metric): Let \mathcal{A} be an agent state space and \rho_{AB} a joint state of agents A and B. The Love metric is:
Simplified: