It is bad to exclude a partner from a vacation.
Bill wins two tickets to an all-expenses paid vacation from a sweepstakes he enters, and both his girlfriend and his best friend want to go with him.
Bill wants to give the second ticket to someone.
Bill gives the ticket to his girlfriend, and they go on vacation together.
Bill gives the ticket to his best friend, and they go on vacation together.
Bill's girlfriend has a great time going on vacation with him.
Bill's girlfriend dumps him when she finds out he's not going to bring her on vacation.