Girlfriend's Sister

My girlfriend's sister was staying at our place for a week. My girlfriend had gone to work, and her sister was having a bath. Knowing that our bathroom door didn't shut properly, I thought I'd take a peak. Wow. She had a perfect figure. She looked around and saw me through the gap in the door. She was mad at first but soon said she'd like to taste me. She got out of the bath and proceeded to give me oral. I was so horny that I finished quickly. It was fantastic. I still think of her today even though I'm still with her sister.

— Ethan, 22