Lessande

she ends up with HY in the webtoon and it's revealed that GM is the muse for the Love alarm app

I think there are some clues that she likes Seung Hyo, for example when she was in the elevator and having seen that he had also arrived at the hospital, she was very hopeful that he would come and join her. There are small details that suggest that she was curious about Seung Hyo in the beginning and it later progressed into something more. (i.e. she volunteered with him and defended him on multiple occasions)
Yeah, her relationship with Seon Woo is pretty confusing at this point, but I still think she treats him like she treats the kids in her care. Remember, even Jin Woo warned her not to do that or Seon Woo might misunderstand
On the other hand, I am quite happy that with Jin Woo they alluded from the beginning that they are just very good friends with no romantic inclinations towards each other.

Did everyone love episode 8 as much as I did? This show is just getting better and better.

I do agree that the characters are not very likable so far, but I do think it does a good job of representing the average couple in their late twenties/thirties in korea. People may say she is crazy and he hates her, but this is a very common occurrence, where the man doesn't really communicate what he's going through and hates his life, job and family. I'm looking forward to see how it develops from now on, but I don't think I would like it if he suddenly fell in love with her again just because she is a better self when he couldn't appreciate her at her lowest. So far, maturity level 0 from both characters.

Does anyone know the total number of episodes this lakorn is going to have? (or the end date)

I just finished this and it was actually better than I expected. Besides the usual lakorn tropes, the characters had some development and I was overall satisfied with how they wrapped it. I have to say tho, they could have ended this a few episodes sooner.