Lmao Yubora literally used Geumhee most vulnerable moment to have sex with her and even admitted she let Taeri die because she felt that was the only way she could get Geumhee, she’s a whole creep. And yeah indeed both Taeri and Yubora are shitty people but saying Taeri sexually harassed Geumhee for years is the biggest stretch ever.
No Taeri would have stopped. She pushed her to the bed & kissed to prove a point. In ch17-18, Geumhee was so happy that Taeri was alive but was afraid and panic that she might be left alone again so she was like “ok you like me and I like you too so let’s go out.” Taeri was very happy and blushed but then Geumhee killed it with her next words… kinda like date and go back to how we used to be, like friends…. So that bed scene happened to show Geumhee that she didn’t understand Taeri’s confession like she wasn’t taking it seriously. Dating would mean them sleeping together, girlxgirl. Geumhee pushed Taeri away and said she didn’t like it like that… as if she was afraid. Understandably, Geumhee’s goal in life was to marry a man and have kids, so when she was pushed down & kiss by a girl… it scared her.
Technically, Geumhee didn’t reject Taeri as a possible love interest..she was new to the yuri world and panic. As a result, her reaction hurt Taeri. Geumhee then told Taeri that if she really likes her she could have waited until she’s ready. Taeri walked away and said I’m done waiting (girl been waiting for what 10+ years).
That was why after Geumhee thought that Taeri died and was vulnerable (maybe drunk too) and end up sleeping with Yubora… She reflected and thought.. hey sleeping with a girl isn’t bad after all, the world didn’t end…and then she was like “I am sorry Taeri. I made it hard for you.”
So yeah Yubora took advantage of her and made her realized that having sex with a girl is not so scary and bad.. lol

Honestly, both Yubora and Taeri are yucky and pushy. They're both kinda shitty, but Yubora way less. We don't know everything this far but from what we've seen Taeri has been pretty shitty to Geumhee. I'm all for Yubora being endgame. Geumhee spent idk 15 years with Taeri amd never felt anything, even after her confession. Yubora flirts with her for two days and she's just "whoops I guess I'm gay" and fucking sleeps with her.
I know Taeri is gonna be alive and endgame 99% likely but I just find her so boring and annoying. Yubora please shoot her if she crawls outta some hole again