i don't blame taekyung at all. yes, he was a little naive but remember, heejae is the first person he had ever opened is heart to. his first love but also his first heart break. since he was young, he was so absorbed in heejae, taekyung couldn't see anything but him. that's what love does to people. so if a blood relative of heejae tells him that he was dumped, who wouldn't believe the guy? & heejae didn't leave any means of contact (obviously since he was in an accident). that kinda made it even more believable that he was dumped. not to mention, taekyung only met the guy once. so i don't blame him at all. but i don't like what he is scheming to do to heejae & that's a whole another discussion (definitely payback).
“so if a blood relative of heejae tells him that he was dumped, who wouldn't believe the guy?”
That’s the main issue I had, because it wasn’t just some random blood relative, it was his brother. Didn’t Heejae tell Taekyung all about his issues with his brother, the emotional abuse and even sometimes physical? So yes, I do feel he should’ve felt at least a LITTLE suspicious that the only word he heard was from his brother that he knew was treating Heejae horribly. However, yes they were both young and out of their league trying to deal with emotionally abusive, controlling families. But Taekyung still should’ve been smart enough to at least question that SOMETHING terrible happened and not just take years to concoct this whole crazy revenge scene. Sigh. So complicated.
Taekuying is an idiot. He already knew Heejae’s troubles with his brother, there was no indication their own relationship was in any trouble, but he just simply believed his brother “he’s sick of you. he left abroad” immediately like that without ANY hint of suspicion or trying harder to talk face to face for a real explanation. He knew Heejae’s family was just as controlling, so he should’ve suspected things weren’t right instead of simply giving up and not trying to find out the truth.