Why're we hating the seme tho? From his reaction i think he doesn't know that she was dati...

Yeah honestly I don't understand why people are so heated when it comes to the seme. From the recent chapter it's literally shown that he didn't know Sen was dating the girl and it's also kinda apparent that even though he had some feelings for Sen that time, he wasn't fully aware about it. I think people are just mad that he had sex with someone that is not Sen which is kind of a stupid thing to be mad about.

Yeah....