You should support your partner.
Aldo notices Julian, his partner, has been using drugs to the point that it interferes with Julian's moods.
Aldo wants to let Julian know his feelings about the drug use.
Aldo asks Julian if they can talk about the drug use, and maintains an open mind while discussing it.
Aldo addresses the issue in a forceful manner, expressing his outlook on drugs.
Aldo learns a lot about Julian, drug use, and becomes a better partner.
Julian is alienated, uses more drugs and the relationship deteriorates.