I helped my friend cheat on his girlfriend
Why would you help your friend cheat on his girlfriend?
Because he deserved it and I'm a good friend.
Never in any circumstance is it okay to cheat, and you are disgusting for letting that be enabled. You just helped ruin a relationship, and you have no respect to your friend and their partner. Do you know how it feels to get cheated on?
How is that related to me?
I'm just saying that it's really hurtful to get cheated on and his girlfriend is going to be so upset. You should be staying out of people's relationships entirely.