At first

At first I really hated the Blonde dude and his friend, they genuinely seemed so annoying to me, especially the blonde haired one. I knew right off the bat that they’d be the side couple because I, being a reader of this manga could tell the brown haired had a crush on him even before that entire thing where the blonde got annoyed at Jiwon’s text. After that though I started liking them more, because they apologized, did their work, started helping out and meeting with the group.
I wouldn’t say I hate the side couple anymore. I like them! However I like the main couple more, I always had. I’ve never really liked the whole side couple thing in any manga cus it gets you so absorbed in the main couple’s story and then cuts to the side couple that I don’t really care for when the Main couple’s story is still happening! (This was mostly in Sign, I didn’t like the side couple, I mean I liked their personalities but I just didn’t care for them as a couple cuz I was involved with the main couple at the time)