What do you think about me cheating on my girlfriend with her friend?
Why would you choose to cheat with your girlfriend's friend?
I just wanted to, and I don't want to hear any lectures about why I shouldn't have.
If you cheat on your girlfriend and you have no remorse, you should just break up with your girlfriend so she can find a partner who respects her. It shows an extreme lack of empathy to cheat with your girlfriend's own friend and not care.
I don't want to break up because I want to make her feel jealous and that way I can hurt her.
If you want to hurt the person you're dating, then don't you think the relationship is kind of bad? You should just leave her before you both regret wasting so much time together.