I believe they do french kiss
.. remember yaya get sick when she was comeback from norway and both of them already together in night for rock climbing and the day after that i see some post that NY go together to the hospital for checking ya.. and they keep together after that for central/zen international watch show..
Ok let me explain.. for some person who had good imun he can survive for virus By airborne respiratory droplets or By touching a contaminated surface. But for sliva i doubt it will survive. Lol..
Because i work in hospital i know it lol.. if
just touch a dirty doorknob or yaya cough or sneezes on his face.. im sure he can survive from it.. or even if he get sick it can't be so fast except ya sneeze or cough on his face every time, every second lol
.. but from saliva, virus can spread so easy..