I think the key is establishing your relationship with Cannabis early on...i.e. when i first met my girlfriend,(2.5 years ago) i smoked a bomb load of reefers infront of and passed some to her, she was sick...too much cider, oops. Like i said, my relationship from cannabis was apparent from the onset, and to this day i choose to proceed to favour cannabis over my girlfriend. I even get too stoned to have sex, not that i can't, i just get too lazy...too many indica strains from holland fuck me over.