Woman changes locks while boyfriend is out of town after he secretly gives his sister a key to her house: 'I came home to find her in my kitchen cooking dinner'

After his sister's messy divorce, she stayed for a few weeks... which, of course, turned into months of freeloading and fridge raids. When she finally left, it seemed like peace had been restored until the girlfriend came home one day and found the sister lounging on her couch with a key.

Apparently, her boyfriend had given his sister a spare just in case, and never bothered to get it back. Since then, the sister’s been waltzing in like she owns the place — cooking dinner, borrowing Tupperware, you name it. When the girlfriend demanded the key back, her boyfriend said she was being unwelcoming.

Now he’s out of town, and she’s ready to change the locks once and for all. But her friends are split. Is she setting a healthy boundary or crossing one herself?