I see that Troyler has already been recommended...
but seriously, it you haven't already you should check them out! they're not exactly official, but it's a start c:

Christian and Jimmy I think their channel's name is JiXtian or something like that~

Rose and rosie, their channel is RoseEllenDix
Kaelyn and lucy

tyler oakley and troye sivan. you can try to convince that they're not actually a couple, but seriously..........

Look up Lush. I freaking love them!! I know a gay guy his channel is Davey Wavey. And there's a hilarious lesbian name Hart. There's also a guy name Tyler Oakley xD

LUSH. LUSH LUSH LUSH.

Troye and Tyler aren't actually a couple, however, try Nick and Ken; adorable. https://www.youtube.com/watch?v=ia-U3jKP5eM

yep, devotedshawol is damn right XD

Troye Sivan and Tyler Oakley!!! #troyler