it's been a long time since

خیلی وقته که. . . .
It's been a long time since. . .
It's been a long time since we met
خیلی وقته که همدیگه رو ندیده ایم
It's been a long time since we had dinner together
خیلی وقته که با هم شام نخورده ایم

خیلی وقته که. . .