Y'all niggaz funny...
It ain't even about cheating...it's about common courtesy
I consider my self the most upstanding person in the world. And I've chilled at mad homies house with their girl/wife till they got back from wherever...
I mean if you a trustworthy person,, that's just what you are. No need to trip...
But there's absolutely NOTHING weird or wrong about choosing to stay in the car. I've done that too...
I mean at the end of the day it's all circumstantial, but there is no wrong answer.
Sometimes it has to do with how well y'all all know each other and get along....Sometimes it has to do with how possessive or jealous dude might be.....any and everything plays a factor.
Some old school women flat out won't let you in unless her husband home...
It ain't always about just cheating....
There's a lot of custom and common courtesies at play here too.....