Three years into our marriage, my wife is pregnant. She's decided to return to her parents' home to give birth. I was thinking it might be nice to have some time alone again, but my wife's younger sister came to help out with chores. Seeing my sister-in-law again after so long, she's grown up, her breasts have gotten bigger, and she's incredibly alluring. Even though I know I shouldn't, I can't help but look at her as a woman. Being alone with her in the same house makes me uneasy. One day, I caught her masturbating and couldn't resist approaching her. From then on...
