That was something I wanted to do 2 years ago. I was pissed off at that person. He took my gf and my gf didn't know that I cared. I was trying to hack his acc. Then I realised what I have become. I have become a freak in something that shouldn't be happening. I stopped and every night, I thought to myself, my why did she dumb me for a dick head. Day after day, I stop thinking about it.
Eventually, my ex came back to be. I was happy. But I said no. I kinda regretted that I said that. But she wasn't worth it, neither was the boy.
Overall, you have to realise, the person being a dick or a smart ass, just get over it.

One day, you will be happy that it is out of your head. And you can move on with your life.