What makes you dislike Hye Won's (fml) character?

well.

because maybe just as me you don't recognise what her deal is!!  Is she upto creating trouble b/w taeho&inha?! or is she only wanting to use inha for her personal benefits cause she knows his background?! Is she faking her fondness for taeho?! cause she is aware he is hard to read just the way she pretends she is,!! 

 she might find taeho as a person soon to become a potential trouble for her in the future cause these two are alike & Taeho is intellectual with brains. Which highlights the reason why she let inha kiss her & even resorted for moving in his house but previously she wasn't and even told straight away to taeho something like " if I move homes, these thugs might think I consider that lady my mom & I don't want that".   And i'm 100percent sure she wanted to look somewhat courageous & mysterious in Taeho's eyes. But this trick didn't work & now she was forced to think of plan B and that was inha! And it worked.  Cause if she were Honest with Taeho in regard to whatever she said she could've easily left but no she wanted to experiment with if he comes back & while he did yet fate had different plans and she chose inha/forced to choose inha !!. Yet again she is not honest!! i.e in that ending night scene on the street she goes like "we need to move ahead or else we'll regret it" (something like this). But 5 Mins Later,,, she is banging on Taeho's door. 

Also ! also! Also! Her shutting off Inha's confession by telling him(( infront of Taeho)) that she's too busy to date & meanwhile giving all her attention to Taeho ((infront of inha)) was the utmost biggest annoying gesture that totally made me go like " IS SHE OKAYYYY?!?!?;"

So moral of the story: this female lead PRETENDSSS & that's what annoys me about her character. inha is kinda naive he won't get her tricks but Taeho Ain't !! And that is why Taeho despite liking her doesn't let himself get wrapped around her finger, he must stay focused.

While I also believe if she were Actually Truly honest with him about her true nature and self he wouldn't have let her go & won her over.

Guess I like my pookie Hyijuu more so imma ship taeho with her though there are less chances of the ship sailing !!

[ I am half asleep hope my answer wasn't confusing & yes we don't necessarily need to like her but I am excited to read her character more ]

 Lily Jhonson:

Aside from her Bad Acting. Her character is cliche, and badly written. 

it's not up to the people who are watching but the makers who didn't put effort into presenting her character well. She had motives to do what she was doing but they didn't show it well. In 2nd epi, she gets ML's attention without doing anything, She just approaches his Best friend, and Tada gets the boy. Even tho he knows his friend likes her, even tho he sees them talking about him in the library, he puts all of his brains aside and goes for her. 

agree with what you said " she had motives to do what she was doing but they didn't show it well" and this is exactly what makes her a one dimensional character & given the scenario b/w the leads and tightness of the plot audience needs proofs and solid motivations that drives them & honestly i'm seeing nothing from her side apart from the mom thing which was too clichè as you also mentioned.

While i wanna mention Taeho  even though we have some backstory of his it doesn't feel like that I need more to understand what drives him like his acting is top-notch atleast for me.  KangInHa on the side i don't trust him, he is extremely friendly and lowkey psyco.

 Lily Jhonson:

Aside from her Bad Acting. Her character is cliche, and badly written. 

it's not up to the people who are watching but the makers who didn't put effort into presenting her character well. She had motives to do what she was doing but they didn't show it well. In 2nd epi, she gets ML's attention without doing anything, She just approaches his Best friend, and Tada gets the boy. Even tho he knows his friend likes her, even tho he sees them talking about him in the library, he puts all of his brains aside and goes for her. 

Couldn't agree more with you and myulmangalltheway and yall both can explain it with words better than I ever could hahaha. I know the FL is noob compared to her peers and all but  I don't get the hate on her. It's clear as day that her character sucks and even more experienced actors wouldn't be able to make it a likeable character without major changes.

I have no problem with her character after watching 6 ep.  She is realistic character. I guess people didn’t like her because she is not cliche character where a girl sacrifice herself for love , she is not the type of honest FL. She is ambitious, persistant and smart, but at the same time she is not evil girl, who do everything for power, at least for now, we don’t know how she will change, I’m pretty sure she will change, In Ha will change her I guess but at the same time he will be disappointed on that changes.  She wants big and she doesn’t hide it from In Ha also. I would say that Tae Ho and Hye Won made bad choice because they were no ones those times.  They could study and make a good life together but that was not enough for both of them, so there is no one to blame.  That kiss is mess of course:))) but sh*t happens:)) if you did expect romance & bromance from this drama, oh pls no:))) don’t be naive, it will get worse when jealousy is mixed, can’t wait. Btw I don’t see a happy ending for anyone here. But somehow they will reach their goals, will they find happiness, I don’t think so. 

Her character possessed the unlikeable trait of a beautiful woman. 

1. She plays with men's hearts. string along guys and being indecisive who to pick and mess up "friendship" of MLs that the show got viewers emotionally invested in. (even if later reveal that she's also got played. It's still bad characteristic for anyone to do what she did.) 
2. She wants money and power but is not getting them herself. She depends on Inha (who depends on Teaoh). she's doing the minimum work that can be giving to anyone else. If she's more savvy and pulls some strings of her own it'd make her more interesting. but as far as we know (EP6) she's basically doing what she's told. which makes her unlikeable to viewers.
3. The writer fails to make viewers sympathize with her.  They don't give her scenes where we can understand or feel connected to as human beings. The scenes we get are not enough tbh.

I feel like any girl who takes on this role will need to have the aura that can turn shit into a rainbow. she needs to be a unicorn, to be so charismatic that people will blame the script instead of her acting.

but sadly, she isn't a unicorn.

Her acting is kinda lacking.  Bad writing is debateable. but when two MLs and the others are doing thier good job and nailing microexpressions, her inferiority is showing. Even in emotional scenes, her eyes just look wide open and only her moth moves. it looks unsettling.

I like her in normal scenes. She looks cold and mysterious. but her emotional scenes ruin it. 

 chickwifey:

The first ep and I wanted to gouge  my ears out with a ice pick.  The sound of her voice is giving the the hives.   I could go into the beyond terrible acting OMG is it BAD!!

The actor in the Tae Oh role always has the same expression on his face in his roles.    Even if he smiles or is happy he still has the look of someone that's about to eat  their last meal and about to be marched off to their death.

Have you seen him in Search WWW or When the weather is fine? 

 Okaybabe:

. She depends on Inha (who depends on Teaoh). she's doing the minimum work that can be giving to anyone else.

She is so effortless that we(audience) can't see her efforts in the plot. LOL!

 Okaybabe:

They don't give her scenes where we can understand or feel connected to as human beings.

Exactly my thoughts! even if, she is one being played by ML, her backstory is so cliche, not have enough motivation, audience like ambitious FL but she is just a mean girl.