Many people describe "crazy sex" as thrilling, risky, intense, or taboo. Often that thrill comes not just from the acts but from the emotional climate around them — secrecy, unpredictability, power imbalances, or drama. This article compares sex with toxic partners (the classic “crazy” shorthand) to sex inside healthy, trusting relationships, exploring short- and long-term effects, why people chase intensity, and how to choose safety and lasting fulfillment.