So I forgot the name of an actor who did a LGBT movie , I was discussing with my friend the most beautifull asian mens and I did want to mention him xD So the movie is a gay theme , and the actor did a personage who had a boyfriend but cheat on him with a younger boy , he was a flight attendant. Do you know anything ?

I'm sorry for my bad english

You can see if it is Will You Still Love Me Tomorrow? or Boring Love.  Both of those Chinese movies have gay flight attendants as characters.  MDL has a BL / YAOI / GAY/ LGBT - Asian movies and series list thoughtfully created by Geanina that you can check out also.  Good luck in your search!