Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: For context, we are in a UK university.

My friend (and housemate) had a 2 year relationship with a girl from home that ended in his first year of university, because she was a year younger than him. Their relationship always seemed a bit contentious and somewhat immature, but 2 years is a long time at our age. 

Come second year in university, she now coincidentally (not sure if him being here influenced her) goes to our same university. They spend a lot of time together during the first few weeks. At that point it is my understanding that they briefly got back together, but that then falls through. Mean things are said, and the breakup isn't clean. 

My friend is really defensive about our sports team, and has said he considers it his family. After the breakup he commanded her to stay away from the team, and the areas we usually hang out. I disagreed with this demand, because I believe that she has every right to fuck whoever she wants, even if he happens to be in our sports team. I tell him this, but anything that goes against his ironclad will was ignored and he would get very angry, despite having asked for my advice. 

Cut forward to maybe a month into the year, I'm told by her on a night out, after she has an emotional outpouring and I give her some advice, that she fucked a guy on our sports team, and that my mate doesn't know about it.

I didn't tell my friend, because I knew it would cause irreparable damage to his friendship with the team, and because of his anger and emotional issues that I know he has. I also fundamentally disagree with the way he tried and still tries to control her behaviour even though they are no longer together. Personally, I believe he had no right to know about her activities. 

There was a short period of time where it seemed like they might get back together in January, despite mine and my housemates advice to the contrary. For a week they were back together, but it was clear they would fail, because the dynamic was the same as before, and nothing had changed. 

Come second semester, news gets around about everything and I still pretend that I have no idea. He now hates the other guy, whom he constantly talks about fighting and intimidating, and he has sent the girl threatening messages, and only now is ignoring her, after finally listening to my advice.  I even had to frase it as 'ignoring her to get back at her' when it's really just for his own sake. I've also had to talk him out of hurling insults at her so many times. 

So, AITA, I reckon it's a ESH. But I don't feel guilty for not telling him, especially after he has acted how I predicted he would. But he has mentioned that just knowing about it and not saying anything would be a friendship dealbreaker. 





not telling my good friend that his ex slept with someone on our sports team