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: This was fourth of July, last year (17 months ago) when I was at a party with my girlfriend and her friends. One of which, was a MTF transgender (Pre-Op, 6 Months hormones), and dating her another one of her friends. This was the first or second time I met her friends, and I didn't know the proper protocol for pronouns with Transgender people. That being said, I made sure to use the They/Them/Theirs pronouns for the party. I thought everything went perfect up until about a month later. Apparently I had "Aggressively Misgendered" this individual during the party, which I found odd because I barely spoke to them and was not aware of any hostile actions or ill intentions the whole day. The only time that I can think of it happening was when we were playing a video game, and I used the ambiguous, "Get him" and "great hit dude" that I would use regardless of Gender. 

&amp;#x200B;

I do concede that I should have asked the individual which pronouns they prefer and attempted to follow their preference, however I was also never corrected and was instead ostracized from the rest of her friend group.

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AITA for feeling like I should have been corrected instead of passively being mad towards?

Unknowingly using the wrong Pronoun for a Transgender person