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: A month ago, I was sitting down with my gf, and her best friend. My girlfriend and her friend were watching some Korean Drama, which was unexpectedly very amusing. My gf and her friend were reminiscing about old K-pop groups, and I just kinda noped out of the conversation, since I had no background knowledge about this subject. They eventually go on youtube and look up so old and new K-pop bands. While I was cleaning up after dinner. at a certain point friend ask me which K-pop group I like the best of all of them, I wasn't paying attention, so I slip out "I don't really know, I really can't tell the difference between them, which is odd for me, because some of the K-pop group look way too much like clones of each other." I might have royal fucked up there, because my gf's best friend is Chinese. She did not take it well, and told me that I was being racist. I understood her point of view, if you took my sentence without context. I apologized for my sentence, and told her that there were no racial innuendos within my sentence.  but in all honesty, I've been telling my gf for years that a lot of K-pop artist confuse me, because most often the only way I can discern them is by name, or hair. But I'm really bad at remembering the band names, and music style. There is something about their facial structure, that makes me almost believe that K-pop artist either had the same surgeon, or there might actually be something very wrong with my eyes. I felt bad for my behavior so I reached out to her, to amend for the damage that I did. We've talked about it, I apologized for my not so thoughtful behavior, and she forgave me, but it's been a few weeks now, and she acts very awkward around me, and tries to avoid my presence as much as possible. I asked her once if everything was alright, and if there something we needed to discuss, she replied with "no everything is fine." But things don't seem that fine to me.  
AITA for making a slip up like this? and if so should I just give her space for now, or should I have another talk with her? 

not discerning the difference between most k-pop artist