There's one where the actor is a gay porn star..did you mean that? http://www.mangago.zone/read-manga/porno_superstar/
No :(( but thaaaaaanks! (▰˘◡˘▰)
I know this question was asked like ages ago, but although I had read the yaoi you were looking for, I couldn't find it! But now that it had a new update I finally remembered it:
-"Koisuru Futari no Taion" chapters 5-6 ( http://www.mangago.zone/read-manga/koisuru_futari_no_taion/ )
p.s. it was driving so crazy I bookmarked the question ╮(￣▽￣)╭
Yaoi where the uke had an obsession with actors and he meets a guy in the city and thinks that he looks like an actor from a Movie but that guy is actually Living in japan