Question...what are your favorite guyxgirl pairings?

I'm considering MinhoxYuri , ChangminxSeohyun, SeohyunxKyuhyun, Sungminxsunny TiffanyxSiwon OnewxHyoyeon . Reason I choose SHINee more because i'm ultimate shinee biased, and I want at least One shineexsnsd pairing. I ( sorry ><) dislike f(x) so I'm not considering them, and i doubt shinee can go with any other girl groups //:

Another  option is a guyxguy story, feels okay with me but I'm more for a guyxgirl pairing. If not I might just put Onew and girl!taemin or Jonghyun and girl!key whatever that fits. 

My current plot idea

- Best friends Onew, Jonghyun and girl!taemin ( Taeyeon) girl!key ( Gwiboon) goes on a vacation at hokkaido, OR meets at seoul. They go around together/ travel together and ends up falling in love. Each couple will have their challenge which might involve terminally ill diseases and accidents etc. There might most likely be a time lapse too.

:P Thats it for sneak peak!