MCV 30 Under 30 2021 
A friend has cheated on her girlfriend with her roommate (found out from another friend). Multiple times. The girlfriend doesn't know. I want to tell her, but that means outing out the friend who told me, and ruining the friendship of us 3. But it's just wrong.
I'd maybe consider the old "If you don't tell her, I will". Give them the chance and the motivation. Might not save the friendship though :/
