Here's a parable for whoever is still reading (and for the archival value of this amazing thread):
My girlfriend doesn't smoke a lot of pot, but the other day I was feeling like it would be fun to get buzzed with her while we did some yard work. So, I offered her some. She was sort of hesitant but decided why the hell not. She had a puff or two. Soon after, she got angry and depressive and told me, "You see, this is why I don't like doing this! It upsets me." I then told her, "Look, dearest, these are not side-effects of marijuana. The weed isn't doing this to you, but it has provided an opportunity for you to feel something that was otherwise just off-boil, if you catch my drift."