Why did Kim Tae-hee and Ryoo Seung-bum get on the same plane to Paris?

Actress Kim Tae-hee and actor Ryoo Seung-bum got on the same plane to Paris, France.

This of course, drew attention and got people wondering why they got on the same plane.

Apparently, it was coincidence. Kim Tae-hee is going to Paris for personal reasons and her schedule doesn't overlap with Ryoo Seung-bum's.

The same goes for Ryoo Seung-bum.

Although they are going to Paris for different reasons, they must be aware of each other as they're on the flight for over 10 hours.