I guess I always had, since I became a man, even if she was my mother.
I slipped up behind her and wrapped my arm around her waist. "Forget about it, mom," I said softly. "He doesn't know what he's missing..."
She gasped, letting the curtain fall back over the window as she turned around, blushing. I let my eyes slide down to her apex, unshaven, covered with dark blonde curls.
"I'm so embarrassed!" Mom blurted out. "Look at me dressed like this in front of you!"
"Shhh..." I said, putting my finger on her lips "Mom, i'm glad you're showing as much as you." I reached and unsashed her robe. "I've always fantasized about what you looked like naked, ever since puberty..."
"You - you have?" The sides of mom's lips starting to curve into a smile.
"Oh, yes," I replied her, as I pushed down my shorts, baring my hard cock. Mom gasped again when she saw it.
I lifted her up on the counter. "Forget dad. Let him have her. Have me."
"Okay," Mom smiled, slipping her arms around my neck.