UseTheBlacklist said:
Using words like ゲロ as an adverb, "w" and using that particular dialect tend to come across as rude, especially when it's the first we talked to each other. I thought you would know those things if you speak Japanese that fluently.

ゲロ甘　 is a normal word. It's not using something as an adverb; it's one, singular phrase. One noun. The medical term for snot is 鼻糞（はなくそ）which means "nose shit." ゲロ甘 isn't that weird by comparison and it's not rude. It just means "too sweet"

"w" is "lol"

I'm apologetic if I made you uncomfortable, but I'm unable to apologize for my dialect and the dialect half the people living in my country use because you don't like the sound of it.

Yes, it was my first time talking to you. But this is the equivalent of Twitter, and on a pornogrpahic site featuring furries. You asked me to speak in Japanese and this isn't exactly business-email type atmosphere. I was speaking nonchalantly, but I never insulted you