Originally Posted by
GUWonder
It’s ok to be on the same ticketed itinerary, as this kind of situation with travelers of different nationalities on the same ticketed bookings is a daily occurrence.
Do note that it may make sense for the US citizen to go together in the same line as for the US VWP/ESTA user on arrival to the port of entry/clearance for the US because CBP may consider you to be the same travel party for purposes of customs compliance. But that’s the case even if on separate reservations.
Enjoy you’re already booked trip together.
It should be okay, but maybe, could I call the airline and ask them to split the PNR into two? If that's possible that would look like two separate people traveling, wouldn't it?
Thanks a lot for your answer!