sunghoon was cold towards sunoo (you) for no reason....he was jealous because you are getting alot of attention from the members and he also wanted attention from the members and later as they and the members were watching a movie sunghoon said this...

Sunghoon: gosh sunoo look at you......you better work out..

your eyes widen as the members were mad at sunghoon

Jay: WHAT IS WRONG WITH YOU?!

Jake: hey dont say that to him!!

Heeseung: gosh sunghoon stop being mean to sunoo!

Jungwon: sunghoon!!

Ni-ki: GOSH SUNGHOON ARE YOU SERIOUS RIGHT NOW!?!

Sunghoon did not care he just wanted to see you cry

Sunghoon: attention seeker....pick me boy