Being an Antagonist, I've amassed an admirable collection of people who don't like me. A collection I treasure and use as a meter for measuring my power over others. The problem becomes, however, once someone realizes you're trying to make them upset, the more mature of your subjects will pry control away from you, dismissing your every action, knowing its intended effect.
The solution? Kindness.
Being nice to people in these situations is great; they're half-unsure of what's going on, and entirely on edge looking for your alterior motives. Presented in front of a mutual friend, they look especially crazy! Watch with glee as you open doors or offer to buy them lunch, only to have them snap at you or constantly ask what you're up to. Before long, they look like the jerk! That'll teach those jerks!