
Love's Brain Spark Fades in 12–18 Months, Revealing the Real Test of Connection
Early romantic love activates brain patterns similar to OCD, with serotonin dropping and dopamine surging, creating an intense phase that research places at roughly 12–18 months. The chemistry fades toward baseline, but that isn’t a betrayal—it's part of a transition toward lasting bonding and cooperative, long-term connection that goes beyond what scans can capture.












