My Boyfriend’s Adopted Sister Crossed the Line, So I Ruined Their Entire Family

My boyfriend took me to his family's estate. His adopted sister had just climbed out of the pool, and her bikini strap was broken.

The summer fabric was already impossibly thin. She let out a soft gasp, covering her chest with both hands, and ran straight toward my boyfriend. "Ethan! My strap broke! Quick, tie it for me!"

The butler and the maids quickly looked down.

Ethan acted as if this was completely normal. He grabbed her hand, turned her around, and expertly tied it into a neat knot.