Also the M can intensify sensations. That's where munchies come from, uhmmm this cheese tastes sooo good. I don't believe it really creates any different reality than what's completely available to us.
In shamanistic tradition I studied, marijuana, despite it's definite psychoactive traits, is not considered even a teaching plant. It is classified as a catalyst plant, only capable of making stronger that which is already there. Sex is also a catalyst, so the two go together, I guess, lol
But I guess what it means for you, is that your good sex is not a something the herb gave you, but merely revealed to you what's always been possible for you.