I'm a old, sperm whore who's only been screwed by 1 man.
You seem to know little about human physiology and biology. Human tissue is not like
plastic or rubber. Nature creates it so that it can take tremendous stretching, as in childbirth, but it is designed to contract back to its natural size and dimensions. There is no way that anyone would be able to tell that you were penetrated by an enormous penis anymore than they can tell your body came out of your mother's uterus through her vagina even days after the event.
Ask any physician or registered nurse.
#1 Is right. I allowed my wife to fuck a guy on the side that she just had to have, and he was hung like the proverbial horse. Her pussy always snapped right back to normal. There was no way I could tell any difference. But if I had fucked her right after he had fucked her, she probably would still be a little stretched, not to mention his cum would have lubed her up pretty well also, which I'm sure would have made her feel looser than I was accustom to.
life is too short, have fun with them