Or, you may not want to engage in sexual activities with someone you don't know or like very well. Inhibitions can protect you from doing things you don't want to do. You can end up dependant upon that drug to do things that you like doing. This can lead to abuse of the substance. There are marijuana users who do report a considerable loss of their sex drive.
Some people report a lowered motivation to engage in activities they previously loved doing.
Some people report they seem to care less about people and activities they used to care a great deal about. Sex can easily become one of these activities that they no longer engage in or care about. There is also evidence that smoking marijuana can cause changes in your brain's chemistry. It can inhibit the function of the neurotransmitter acetylcholine, a chemical that transfers information from one nerve cell to another. In other words, when a person smokes marijuana, they tend to lose their short-term memory.