I have a scene in which two characters, Boy and Girl, meet for the first time. Girl is the POV character in this section.
They are about to have lunch, when Girl is called away on an emergency. She mutters that she's sorry, asks if they could meet later, and dashes off leaving Boy standing there.
As currently written, the scene ends
Boy said to nobody in particular, half astounded and half amused, "Uh, yeah. I would love to."
I feel showing Boy's response completes the scene well. However, the POV character does not actually witness this response (which is intentional... I want to show him standing there alone).
Short of making Boy the POV character (which I don't want to do), is there a good way to handle this?
Is this a case where it's OK to violate the POV rules?
Should I leave that last part out?