Does a holiday romance get a place in the rest of the group's itinerary?

On the third morning, Samira is setting a fourth place at breakfast again. “Nico's coming with us today,” she says.

She and two friends are halfway through ten days in Lisbon. Nico is someone she met during the trip. The first breakfast invitation felt spontaneous; now he is included in dinner plans and a proposed day out without the others being asked.

Fiona likes his company. Clara had looked forward to time with friends she rarely sees and feels awkward being the only one who wants some of the original trip back. Their Sintra outing is still planned as three people, but Samira says she may skip it to spend the day with Nico instead.

What is fair to ask from Samira when they still have several days together? Clara does not want to police a friend's dating life. She also did not expect to negotiate the guest list at every meal, and Nico may not realise anybody has mixed feelings.