
If Matthew “knew at first sight” that hayoung was his fated pair then why was he chasing after Ian?... am I missing something or

No I'm pretty sure Matthew was just trying to provoke the main couple, i remember him saying something along the lines of "it's because you're both being troublesome" he knew they liked each other but thought they needed a push. I mean if he didn't make a move on Ian it'd probably take them awhile to realize their feelings.
He really do have whatever “bitch eyes” are supposed to be lol