They were in the room for about an hour.

Apparently this A+ list mostly movie actor who just reached that status cheated on his actress wife.

With who?

A very recent co-star who is also an A+ list actress.

The two were out of town doing a very quick event.

In her hotel room.

They were in the room for about an hour.

Nothing happened on set.

So, this was unexpected.

Chris Pratt & Jennifer Lawrence
2016 CinemaCon – Passengers

Source: http://www.crazydaysandnights.net