Seoha did it a couple times when Yul's asleep. The first time was after they had sex, I think it was right after Seoha stood him up and Yul found out it was because his dog was sick?
This one I guess I'm still fine with. Yes it's still technically rape, but they just had sex.
And then I'm not entirely sure how many times, but during the time Yul slept in the club room, he would "dream" of having Sex with Seoha. I think once after the threesome when Yul was blindfolded and Seoha came? And then when Gongju found the kiss marks around Yul's ass. And maybe also that one time before Seoha hit Seowon. I wasn't sure at first, because Seoha denied ever being in the club room when Yul's asleep, but the latest raw just confirmed it. During the time he was sleeping in the club room, Yul wanted to stop seeing Seoha, so yeah it just doesn't feel right.

Spoiler below...
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Waiting for that plot twist where Yul end up with Gongju. Seoha's sweet and all, but the rape kinda left a bad taste for me.
Hoping that next season, or this one *fingerscrossed* we'll see more backstory of Gongju. Also wanna know why he went away for a week (he's done this two times) and came back pretending like nothing happened.