beta
I know some people are not finding them interesting but in my opinion I love that they are basically in completely different "leagues", it's so much more realistic because you can't help who you end up falling in love with. The difference between them creates harmony and makes them a lot more interesting as a couple! I also like how much less forced they are, like potato said something that really struck a chord with Heesung making him sway a little, and it really is like that in real life. Someone says something which attracts you to them, even if they aren't necessarily who you typically find physically appealing. Heesung was surprised by this, but didn't fall in love.
It kind of implies to me that Heesung isn't going to randomly fall in love again, and perhaps all this time he was never really in love with all those people, maybe he just had a crush, an infatuation, or maybe it was lust? But it makes it all the better that Heesung is confused by potato. Potato is a character that is not Heesung's type, and he is not someone Heesung is in love with. This makes it all the more real, and all the more likeable. I think potato may end up becoming Heesung's first ever true/real love.
That's just my take/predictions