Revenge, but how?

Has anyone ever hurt you soo bad you wanna hurt them?
So the same person keeps doing things to hurt me, and for years I've put up with it. Like yeah I'll say something, but they don't change. They are to selfish. Well lately I'm tired of talking and wanna do something about it, like hurt them... but I am literally "too nice". Everyone tells me. I try to act otherwise but tonight proved it.
I'm stewing because yet again this person has said and done something so ridiculously selfish, only thinking of themselves and not caring that they have hurt me and another. I'm stewing and stewing and think "AURG! I wanna do something mean to them!!" So I continue watching this show that I only watch with them, without them. Yeah, they won't really care. Like they'll be annoyed, but won't care cuz they will just watch it on their own or start it with someone else.
This person can't be hurt because they always get what they want when they want it. I'm soooo sick of it. This person doesn't compromise. Oh and when they know they've hurt you, they buy gifts... which works for so many people, but thats not how I roll. Like all I want is honesty. I just don't get why that is so hard for people.

Ug. I'm so sick to my stomach with dealing with this crap. It's so ridiculously stressful. I have express this soo many times and really wish this person would hear me. UG UG UG!!

I just WANT. TO. SCREAM!!! AHHHHHHHHHHAAHHHHHAHHHHAHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!