How to express giving two people some privacy? Recently I noticed that a young girl waited for several hours, so as to be able to pass the break with my younger colleague. So my friend and I took a walk outside.

Though this is not something I expect to have to explain, I still wondered how to politely express it. Obviously I don’t mean they had anything improper in mind. But they could talk without everyone listening.

Would 尊重兩人隱私 sound improper? What are polite expressions?
"Give them some privacy" = "給他們一點私人空間吧"

私人空間 means "private space", To give a person some private space means to leave him alone for a while.