Pete peeps on sexy sister and suddenly it happened.

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I'm a twenty-four-year-old grad student and my sister Rose is just over 18. We both live at home with mom and stepdad in a really big and really old 2-family house. Rose and I share the upstairs unit which consists of 2 bedrooms, a living room area and a full kitchen and bath. There's a 2nd doorway between Rose's room and the bath. It's a door we never actually use; in fact it was painted shut long before either of us were even born. The door itself is original to the house, with an antique glass doorknob and big old...