Countless men pair the use and abuse of substances with sexual behavior. Often, this involves a stimulant drug like cocaine or methamphetamine, though alcohol and other drugs are also commonly used in conjunction with sex. There are many ways in which this pairing occurs, any of which can create a mutually reinforcing pattern. Over time, substance use and sexual behavior can be paired together so often that they fuse into a single behavior. If you’re doing one, you’re also doing (or you’re about to do) the other.