I think this is one of the biggest divergences between what women think men care about and what they actually care about. Men do not give a single crap about stretch marks.
Or as a commenter said:
Was having sex with a woman back when I was in the army who said, โSorry about my stretch marksโ and I replied, โI donโt mind at allโ when in reality I didnโt even see them or notice them. So of course I didnโt mind because I had no damn idea about any stretch marks that might or might not have been there.
