ok after rereading, i realized why the blondie had that evil smirk. he saw a bite mark/hickey on Ideum's neck. im sure he will connect the dots about Jaeyi and Ideum hooking up. and for some reason the brother seems like the type who always steal the spotlight from Jaeyi. Hence Jaeyi's resentment and the need to hide their relation.
ok after rereading, i realized why the blondie had that evil smirk. he saw a bite mark/hickey on Ideum's neck. im sure he will connect the dots about Jaeyi and Ideum hooking up. and for some reason the brother seems like the type who always steal the spotlight from Jaeyi. Hence Jaeyi's resentment and the need to hide their relation.