I read this eromanga several years ago on sadpanda. It had many short (20-ish pages) unrelated stories. One of those was about a young couple of virgins at a love hotel. The guy would do all kind of kinky stuff you would see in an eromanga and say something like "It's okay, everyone does it! It always happens in porn!". The girl suffered though it, but in the ends she screams that it's impossible that normal people do all this while crying. I think the guy reacted either by whipping out bdsm stuff or trying to kill her with his usual catchphrase.
If I remember right most, if not all of the stories were all parodies of eromanga cliches.
It's not in full color and probably an actual manga (not a doujinshi)
Also I think it was pretty old. Early 00s maybe?
Pic unrelated.