Well I kind of understand what's ur feel. I also hate story which the character made the other chara jealous by slept with random people. But usually I found this kind of manga with a jerk seme and the uke being so pure and innocent. There are lots of manga which has a virgin uke and extremely experienced seme.
Tired with this kind of trope, I felt a bit refreshed when I found the reverse (but I actually still prefer both seme and uke are pure)
So maybe I have a double standard. (But in this manhwa I don't think the uke's a total bitch. And the seme also had a relationship with a girl in the past. So I'm still enjoying it )
Ahhhhhh I really don't like the uke!!! Really what is so attractive about him! He literally never talks, he hurts the MC on purpose and I hated the scene when they finally had sex. I wanted their first time to be cute fluffy sex but he just did it to then leave the MC and then kiss a guy in front of him. That's frikin cruel man. I kinda lost the love for the story and characters after that and I'm sure the story gets even cuter but the uke guy is a jerk and MC is cute af. I dunno I just hate when characters go do something to make the other person jealous like sleep with a guy and then they get back together like it's chill. If someone did that to me I'd be like wtf why don't you just talk to me!! Communication bitch! This all probs makes no sense but he suddenly stopped liking the story cri. Would like to see what happens with the ukes ex bf tho. ╮( ̄▽ ̄)╭