Guessing it's bc dating culture in Korea is much different than in western areas
Tbh I don’t think so since most other romance manhwas/dramas do block the ex! I think he’s just been so good at manipulating her to make himself seem like the good guy, that she never actually considered blocking him, as of even if she did that it wouldn’t change her situation (even though it would be a huge weight off her shoulders) him being the TA might also have a part to play into it. I might be reading into this too much tho, either way, she has patience I could never have
Idk what she takes to be patient like that, but i’d have blocked the ex sooo long ago I hope SHE can put him back in his place real brutally real soon. Also I just know that whole bet thing will cause sm drama when it comes back