おごる平家は久しからず。
I haven't seen you for a long time, Bill.
よう、久しぶり。
めっちゃ久しぶりやん。
It's been a while since we last met.
I haven't seen you for a while.
You're quite a stranger.=Hello stranger!
It's been a while since we last met.
I haven't seen you for a while.