Infinite and Exo are my favorite boygroups, SNSD is my favorite girl group.
From infinite my fav and bias is hoya but I love them all equally.
Kyungsoo is my fav from exo k, Luhan is my fav from exo m and so happens that Lay is my only bias (I usually don't have biases but here I am now lol) either way I care for all 12 boys as they are one big group.
SNSD is a whole different subject though, my fav has always been Sooyoung but my biases always change depending on my mood, I find that odd. (current bias Yoona)
ok about what couples I like...there's a lot tbh but I'll just say a few of the ones I most creep on.
top couples atm: Layhan/Woogyu/Kaisoo/Soona/Jeti
other important couples: Chanbaek/Taoris/Seho or Suhun/Myungjong/Dongyeol/Jongkey/2min/NAP/Chunjoe/chanrick
there are more for other groups but the ones I listed are my main.
With that said I think that concludes what my tastes are...feel free to talk or ask me anything.