How does marijuana affect your relationship(s)?

This is directed more to people who smoke weed, but if you're one of those people who honestly feel the need to say how weed is bad go for it, I don't care. Do you (weed smokers) prefer your partner to smoke also or do you not care? What if they smoke more than you do, is it that a good or bad thing?
How does marijuana affect your relationship(s)?
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