true set.
Just like penis' , vaginas come in all sizes as well.
To get a bit gross here...
It would be possible for someone to notice a diffrence in a womans vagina IF it was from sex ONLY..
and if they were " passing" her around or having sex with her within a few minutes of each other.
Simply because the blood flow softens the muscles ( sometimes alot.. sometimes not ) AND the penis stretches out the vagina during intercourse..
So it IS a possibility.. but , he would have had to have had sex with her.. with in a few minutes of someone else for that to apply..
( biting lip to keep in bad jokes..
)