I have to go do something - A fancy way to say you're too scared to face the person you'

A fancy way to say you're too scared to face the person you're with. It’s like running from a fight with a spoon.

'I have to go do something.' He left me mid-kiss like I had lice.

'I have to go do something.' She ran out during our third coffee like I was a broken espresso machine.

'I have to go do something.' He left me mid-conversation like I was a bad joke.