Ok this is completely hypothetical.
You catch your best friend's boyfriend/girlfriend cheating on them do you have an obligation to tell your friend, or is it not your place
Most Helpful Guy
I'd tell the person who cheated to tell my friend or I will.
I normally don't get in people's business but I'd feel like a shitty friend for not doing so.1
Most Helpful Girl
It's not necessarily my place to tell my friend... it is absolutely 100% my place to make the SO feel like a dirty disgusting dirtbag and make his or her life hell for as long as I please until he or she feels so wracked with guilt that they come clean and then my friend, being the quality person that they are, dumps them and ruins their reputation for the rest of their life in the community and they're forced to move and start over elsewhere because cheaters deserve to die and rot in hell.
Maybe not quite that drastic... but I WILL call them on it and make them feel like scum.0