
Uhm. Did she divorce him because he couldn't TASTE??? Like what? HUH?
Why get married in the first place.

It's not really that, it's just a part of it. We can clearly see how miserable Inwoo is and how it rubs off on people he's close to, he even says it in his monologues that he wishes his partners are as miserable as he is so they can have this understanding or connection with each other. Of course, it does root in his inability to taste anything but ultimately that isn't the only reason she divorced him, the reason isn't that shallow.
What do you mean confusing feelings? It better not be love.. Because that would be so random Even I'm confused. y'all just had sex and argument all throughout the story.