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: Okay back story- my fiancé recently moved in with his cousin. His cousin had a gf of four years and her and I quickly became very close. Over the last couple months I have come to consider her a really great friend. 

*To make things easy I will refer to my fiancé’s cousin as Tom and his gf as Jan 

So tom and Jan had a very rocky relationship. She has trust issues from stuff he did at the beginning of  their relationship but with that being said sometimes she did take it overboard in being controlling over him. They did not have a great relationship at least in my eyes. *So they broke up last weekend. ( side note they break up and get back together a lot).  

Jan after the break up was obviously very sad and emotional. I was there while she cried and helped her talk through it. She repeatedly told me that I needed to tell her if I found out Tom did anything with any other girl. I told her yes but in my mind really wasn’t going to tell her if I found out anything minor because it would just upset her for no good reason.
So for reason that aren’t important,  I found out Tom slept with someone else 3 days after they broke up. Me and my fiancé were surprised. I completely understand that after they broke up he could do anything he wanted. I just didn’t think it would be so soon with all things considered.  
So fast forward to yesterday-Jan and I had already planned to hang out. So I go over and we are talking about everything and how she has really missed him and wondered if he wanted to get back with her.  So she asks me to my face if I know anything and so I told her. I  just cannot lie anymore. I’ve lied for people in the past in similar situations and it literally ate me up inside. So oblivious she was crushed, she understands that he didn’t “cheat” on her because they were broken up but she is just so hurt, she never thought it would happen so fast. 

So obviously Tom now knows that I told Jan what happened. And he is pissed at me. He told my fiancé that I better not come around their apartment anymore and all this stuff. Also my fiancé is kinda mad at me for “stirring the pot” when I could have kept my mouth shut. But how is that fair to me? To have to lie for Tom when I don’t even know him that well and now consider myself way closer to her than him. If she wouldn’t have found out she would have literally obsessed over him and wanting to get back with him. And now she is completely done with him. Still emotional obviously but ready to move forward with her life. 

So AITA? Should I have done things differently? 

telling my friend her recent ex slept with someone else