Maybe "Please don't love me"?
Correction, I was actually thinking about: "Don't be Nice to me" but I forgot the name so I confused it with the name of some other series.
Anyway here is the link:
https://www.mangago.zone/read-manga/don_t_be_nice_to_me/
I remember this was actually one of the only series I read that had the bottom character actually not like the sex part and then later on when they finally talk about it, seme actually gets their pride hurt because uke said most of the time they had sex, he only felt pain. It was such realistic depiction of sexual experince that it was refreshing to see in a manhwa.
YES that's the one!! tysm!
what's the name of that yaoi where the seme and uke did it for the first time and seme asked uke how it was and uke was like 30-70 and seme was like 70% pleasure? and uke was like 70% pain and seme was so sad
idk if the percentages are right but he def felt more pain than pleasure and seme didn't even know