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: Over the weekend I got accused of being an asshole and that I've betrayed a friend. I have a group of friends that have all been friends for close to 3 years. Recently (about 3 weeks ago) my friend Alex and I attended an event together and have started seeing each other since then. She's a ton of fun and we've always gotten along really well. I am overall really happy the direction its headed, however since we are in the same friend group we have agreed to not let on that we are seeing each other quite yet. There were no previous relationships involving anyone in the friend group. We've made it a point to not really be flirty or overly touchy during this time. 

We both decided that getting other parties involved would complicate things and why cause drama when we aren't sure if its going to be a sure thing.  Given other dynamics and our friend group's love to make things difficult this made sense. Up until last night this had been working out fine. 

Last night Alex and I decided to go to the bars. Our plan was to potentially meet up with our third friend Chuck and some of his buddies. After being blown off for a couple hours by Chuck, they finally showed up hammered. Immediately Chuck begins to ask a bunch of questions about the two of us loudly in a crowded bar. We laughed and brushed it off, but he continued to isolate and separate us. Not wanting to deal with it in the bar we both denied anything happening, albeit a bit differently. He then spent the rest of the evening saying how happy he was for us and how it was cool. He would occasionally make sexually suggestive comments and gestures. Then he started getting pissed about it and saying stuff that didn't really make sense. I thought we ended the night fine when Alex and I left though. 

Today we've exchanged a bunch of texts and I've apologized for not being straight up about it, still he feels betrayed and like he had to manipulate both of us to get it out. Also that we wouldn't have told him if he didn't do that. 

I guess where my head is that a relationship is between two people, and I shouldn't have to define it to a third party especially in bar with 200 other people. Is it bad to want a bit of privacy or do I have the responsibility to tell everyone? I've been clear that none of this was meant to hurt him and that we wanted to be on the same page before telling other people. Also that I value his friendship and that I would never intentionally do anything to jeopardize it. I realize I shouldn't have blown him off and instead said we should talk later, but AITA for not telling him sooner? Any advice for moving forward? 

&amp;#x200B;

TL:DR I started seeing a mutual friend. A third friend confronted us in a crowded bar and we initially denied anything going on. He made comments all over the place, but I thought we were okay that night. Today he says I owed him to tell him sooner. AITA

not telling my friend I've started seeing a mutual friend