I grabbed some snacks and we worked at my desk, with only occasional kisses until we heard Maryanne at the front door.

"Hey geek!" Maryanne's voice came from the front of the house.

"In here!" I yelled back.

"God! I'm so glad you're home!" her voice came booming down the hallway. "You've been neglecting me and I'm so fucking horn..." her voice stopped abruptly as she stood in the doorway with her blouse undone and her chest heaving under her lacy bra. "Oh shit!"

Katrina looked from my sister to me and back, absorbing the shocking disclosure as I wracked my brain for an explanation other than the truth.

"Katrina,"...