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: I started an internship a few months ago. Myself (female) and another intern (male) clicked super fast as friends. We’re both new to the city. He’s always seemed very relaxed at work, but at the same time pretty private. A guy he has always called his friend has picked him up from work a few times and stopped by after work drinks to hang out, but they’ve always left quickly. Anyways, my coworker and I have gotten closer over the last few months. One drunk night a few weeks ago he told me he had questioned his sexuality a lot. So the next time I saw him with his “friend”, I asked him later if they were dating and he said yes. I was super happy for him, no big deal. He said he was relieved because he never knows how people will react and he doesn’t want to get too close to people before they know. Things have been smooth sailing since then.

So his boyfriend facebook-added me a week or so ago, and I did a little creeping the other day. I see that they’ve been posting couple pictures together for almost three years — I was a bit taken aback because I just thought they had just met and were casually dating. I don’t care so much, but I guess I feel hurt that I thought I was getting closer to him as a friend and he never thought to mention that they were in a very serious relationship, which just seems like something you tell your friends. I feel like I can’t really trust him now and sort of like I don’t know who he is if that makes sense? I asked our third close friend if she had known they had been dating that long and she said she didn’t even know they were dating at all, period (but that she been suspicious that they were). So I guess he’s just a pretty private person towards everyone, which made me feel a little better. and I know his personal life isn’t my business but I still feel hurt.

I texted today and jokingly said “Dude!! [third friend] and I had no idea you and [boyfriend] were so serious hahaha” and he just said “well it’s all over my social media haha, I just don’t like telling people out of nowhere”. I just that it was a good thing, that he and his boyfriend looked very happy but that I was just shocked. He didn’t respond but normally he would be very easygoing. I’m just wondering AITA and how should I proceed from here if I am, please knock some sense into me. I’m pretty sure I could’ve handled the situation a lot better but I’d like to know how specifically.

being upset that my friend didn't tell me about his serious relationship