Yeah I do feel a bit for them though. We assume they did it so they could get a mortgage approved but the sale could fall through or be delayed for so many reasons.
Totally on them - surely if they're a young-is couple with no dependants, it should be simple for them to move into an AirBnB or back with parents or whatever until the sale is completed and moving happens.
i would say it’s on them to stay in an airbnb. not you. there was no agreement and they jumped the gun