Well I'm not into K-pop so...lol
Well I guess just based on what I saw after googling...

Kill Jimin
Kiss Junsu
Marry Sehun

Ji Chang Wook
Joo Won
Wallace Huo
Kill: Jimin   ._.
Kiss: Sehun
Marry Junsu


Jo Kyung Ho
Seo Kang Joon
Lee Dong Wook
Kill: Jo Kyung Ho (sorry)
Kiss: Lee Dong Wook
Marry: Seo Kang Joon (I mean look at him, look at his face, look at his eyes xD)


Lee Seung Gi
Jang Hyuk
Song Seung Hun
Kill: Jang Hyuk >.<
Kiss: Song Seung-Ho
Marry: Lee Seung Gi (he's the only one who's not 20 years older than me :'D)

Wallace Huo
Lee Soo Hyuk
Seo In Guk
Kiss: Lee Soo Hyuk
Marry: Seo In Guk
Kill: Wallace Huo (sorry)

Puttichai Kasetsin (Push)
Ji Chang Wook
Mike He
Kiss: Puttichai Kasetsin
Marry: Ji Chang Wook
Kill: Mike He

Jimin (BTS)
GD (Big Bang)
Zico (Block B)
Kill: Zico
Kiss: Jimin
Marry: GD

Super Junior::
Choi Siwon
Eunhyuk
Leeteuk
Kiss: Leeteuk
Marry: Eunhyuk
Kill: Siwon (sorry >.<)

Gikwang
Yongguk
Bobby
Kiss: Bobby
Marry: Gikwang
Kill: Yongguk

Shinee::
Key
Minho
Taemin
Kiss: Taemin (he's an oppa but I still see the baby Taemin...)
Marry: Key (so we can celebrate our birthdays together hehe)
Kill: Minho ( I'm sorry oppa xD)


Big Bang:

GD
Taeyang
TOP

Marry GD
Kiss Taeyang
Kill TOP

(Orange marmalade cast)
Yeo Jin Goo
Lee Jong Hyun
Song Jong Ho
Kiss : Yeo jin goo
Marry : Lee Jong Hyun
Kill : Song Jong Ho 

EXO... 

Kai 
Beakhyun 
Chanyeol
Marry: Yeo Jin Goo
Kiss: Lee Jong Hyun (because Yonghwa is my bias :D)
Kill: Song Jong Ho (All his characters were a nuisance! lol)

Running Man cast

HaHa
Yoo Jae-suk
Kwangsoo

Edit: I'll reply to the Exo hehe.

Marry: Kai
Kiss: Baekhyun (he's my bias but Kai is husband material hahha)
Kill: Chanyeol
kiss HaHa (I see him first time but if i have to choose among these three...)
kill Yoo Jae-suk
marry Kwangsoo (Just cos i have to choose among these three. Othewise i'd only kissed him) x)

Lee Kwang Soo
Jo In Sung
Eita
Kiss: Jo In Sung
Marry: Lee Kwang Soo
Kill: Eita (sorry, boo)

Seolhyun
Suzy
IU