I'm glad you stood up and glad you don't feel bad about it. Doing the right thing can be hard but it's still important to do it. My husband and youngest son have aspergers and I'd hope someone like you were around if they were being attacked. How disgusting indeed. Yes, I've stood up for people many times and gotten flack for it. In my interpersonal relationships (friends and family) sometimes the people saw the error of their ways and grew from it, sometimes they doubled down on dumb. Relationships have ended and it's all been for the best. If they are good people they will see you were right and forgive. Even if they don't see you are right, they will forgive and forget if they are at all decent people. If not, your boyfriend and you are better off without such ugly people in your life and your boyfriend would be better served by sticking with winners like you than losers like them. On behalf of humanity I solute you for doing the right thing!