i want you to give your opinion

are you up-to-date with the manga? if you're not, you might be spoiled if people answered your question (￣∇￣") anyway, i think it took a long time for yona to realize that soo won killed her father. she trusted soo won so much, she looked up to him when she was growing up. it may also be the case that the hair pin reminds her of soo won's betrayal and what she needs to accomplish as the princess, since soo won gave it to her on her birthday, the day her father died.

i know that, i dont read the manga because it is too long, i love spoiler after all, because i dont like sad ending, but i still confuse her feeling to soo won, love or hate?

omg you should totally read the manga!! there's a kissing scene between yona and a main male character who isn't soo won, i think you guessed him right already... and the recent chapters imply that yona is developing feelings for him so if yona loved soo won, she may be falling out of love already. yona and soo won also met a couple of times. i don't think she hates him though. disappointed, maybe. but she thinks that soo won makes a great king.

i suggest that you read the manga!!! it updates only once a month though so the wait is sooo agonizing but it's definitely worth it! you can just start reading the chapter where the anime ended (=・ω・=)

what chapter is it? cause when the anime end with the manga is different, so she forgive soo won already? in my opinion soo won love her too,, is that correct?

the anime finished off in chapter 47 (said google since i only read the manga)
i don't think she forgave soo won, i don't remember much since i've read it a long time ago and i just read the new chapters whenever they come out (￣∇￣") i think soo won is falling for her though. he cares for yona, he always did.
read the manga, i'm planning to re-read it too since it's one of my all-time fav shoujo, then maybe we can chat! ヾ(❀╹◡╹)ﾉ~