comment glitch

So there was this comment on a tiktok, this girl says that she’s 20 and her boyfriend is 27. Someone complained about this age gap in a reply. The next person said this age gap is acceptable, as long as they started dating after the girl’s 16th birthday. I replied to this reply and said, “please tell me this is a joke.” So when I look at my reply, it seems as though I replied to the original comment. The original commenter asked I had a problem. I thought maybe “oh, I’m just getting old and I accidentally replied to the wrong person.” But that’s not true because the replier I replied to responded, “not a joke, just an opinion, people mature differently.” Ew. Anyways yeah, what actually happened?