One summer a few years back, I allowed my sister's oldest son to come and stay with my husband and I while he toured the local college campuses to see which he preferred to attend. I've always had a soft spot for him, and I'm much closer to him than my other nephews, but it was never anything remotely physical or sexual.

Late one Saturday night I had stayed up to finish watching a movie and fold laundry. I took some fresh bed sheets to his room and opened the door. He immediately started floundering with the DVD remote, and it took me a second to realize he was watching porn and masturbating. My eyes gravitated to his penis, and then I quickly backed out of the room and shut the door. I was as embarrassed as he was, and apologized through the door for not knocking.

We didn't discuss it, but for two days afterwards I thought about it. Him laying in the bed, his firm body tensing as he pulled on his erection. I felt wrong and dirty thinking of it, but I also felt flush and excited. It was a few days after that when I walked into the guest bathroom to get some hairspray, again forgetting to knock. There he was, on his knees, masturbating. I noticed him before he noticed me and actually watched him pump his fist around his cock, and wrapped around the base was my bra. He noticed me just as I backed up and shut the door. Yet again, we didn't discuss it, but I masturbated that night with my eyes shut, reimaging the scene. I came hard, and nearly woke my husband up.

A week later, I walked into his bedroom late one night. He was masturbating again, and I apologized for not knocking first, eyes on his erection. To my amazement, he didn't stop as I turned to leave. "Wait," he said softly. I looked back to him and he hadn't stopped. "You can watch if you want to." I simply went out and shut the door. I stood in the hallway, trying to listen to him, hearing the soft sounds of the porn on the television, and masturbated.

The next day we had a few moments alone, and I sat him down and explained that I had a bad habit of not knocking. I apologized again. I explained that I understood his hormones and that while the act was natural, inviting your Aunt to watch wasn't. I explained that I knew he was just at an age where he almost couldn't help himself. He apologized and looked embarrassed. All I could imagine was immediately pulling out his lovely cock and sucking it, then leaning across the kitchen table with my legs spread and letting him have his way with me. I knew it was wrong, but I couldn't help myself.

Our relationship went back to what it was, but I still masturbate occasionally to the sight of him stroking his hard on.