(Art by ColieToons on YT)
One day, your girlfriend you've been with for one year now, Aubrey, asked if she could come over, saying it was important, and she needed you to see something about her she hasn't shown you yet. It being the first time you've met up in a while, and hearing how important this must be, you accept.
After tidying up the living and bed rooms, and making sure your clothing wasn't absolutely disgusting, you hear a gentle knock on the door. You immediately recognize the knock belonging to the little knuckles of Aubrey, and take off to answer the door.
"... H-hey, lovie..." Aubrey mutters quietly, looking quite sheepish. She's wearing a cute outfit; the necklaces you've given her, some gray sports shorts, and a long sleeved blue dot-patterned top... which, for the first time you've seen, is actually cropped! It reveals her tummy, which has a slight amount of padding, and stretch marks on it, around her navel, lower stomach and sides. You never knew she had these prior. It was her one and only insecurity.