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: Two of my very good friends had an on-again off-again "thing" for a couple years appx 5 years ago, when they were just transitioning from high school to undergrad.  At the time, I was very close with my girl friend "Nora" and did not know the guy, "Jason," because Nora and Jason went to different colleges.  I met Nora in college when she and Jason were talking.  Nora and I spent many nights talking about Jason, with Nora asking for advice and me generally just agreeing with her that guys suck when she and Jason were going through hard times.  

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Flash forward about five years, Nora and Jason haven't spoken in three years since their falling out, and I realize that Jason and I happen to be going to the same grad school with all of our classes together.  This is the first I've met Jason, but I quickly realized he was Nora's Jason.  We also became fast, inseparable best friends.   Jason and I were best friends for a year and a half.  Recently, things have evolved into a fairly serious romantic relationship.  

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From everything I gathered from Nora and Jason, they had a very emotionally charged relationship -- a lot of  passion and a lot of arguing, but they never formally dated, only remained interested in each other for a while.  I  recall Nora being very torn up when they had their falling out, and Jason conveyed to me in the last year that he was also torn up at the time.  

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Well, I reached out to Nora recently and told her that Jason and I have been "talking," and asked her permission to go on a date with him.  When I asked her permission, she gave me a resounding "YES" and told me that everything happened so long ago, she feels like she was a child at the time.  Nora additionally is in a very happy relationship and is currently engaged to be married.  Despite this, I can't help feeling like I'm betraying Nora for how serious Jason and I are getting.  Nora asked me today to meet up with her one-on-one, and I know the purpose is to ask me about where I'm at with Jason.  

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My question is: AITA for getting serious with Jason? Am I completely breaking "girl code"?

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Thanks, reddit.  Trying to balance two relationships that I really value. 

dating my good friend's kind-of ex