Haeun's feed

It was a bl manga, I kinda forgot how it went, it was short (I think only 6 chapters, black and white) and at the end when they were about to have sex, one of them asked “so who’s taking it” and then they both say “ain’t it you?” And then they get into a little argument and then the top basically says like “I was really looking forward to fucking you” or something like that, so then the bottom lets him do it