As I woke on Saturday morning, I realized that my time alone with Monica was coming to an end, her mother Marie would be flying home one week from today. With only a week left I wanted to take full advantage of my remaining time with Monica. I knew that I would be marrying Marie and that any time alone with Monica would be stolen time in our family life.
By the time we had eaten breakfast Monica and I had made-love once and were ready to shower and start into our weekend routine. During our shower Monica told me that she had to meet a girlfriend to help her on a school project. But that when she came back she expected us to make-love again. Once Monica left I started in on cleaning the house and doing my laundry for the week. About 1:00 pm there was a knock on the door interrupting my daydreaming about Monica and her fantastic young body.
I opened the door to find Julie, Monica's 18 year-old girlfriend from school; she stepping into the house quickly, telling me that she was here to tan in the yard with Monica. Catching me by surprise she was halfway up the steps to Monica's room before I was able to start telling her that Monica wasn't home. My message was incomplete before she was at the top of the steps and entering Monica's room. I started up the steps to tell her where Monica was only to find that Julie was standing in Monica's room clothed only in her small string bikini. Her well-tanned body accented the small patches of material covering her small '34A' cup breasts. In my minds-eye I could imagine how her dark nipples would look when the strings holding the top in place were released. I remembered fucking Monica in the kitchen as I looked through the back windows at Julie sunning in the back yard in her bikini. That's when I started fighting the image from my mind knowing that I was in Monica's room, with her girlfriend, and across the hall from Marie's room, my girlfriend. The words were slow from my mouth as I told Julie that Monica wasn't home and wouldn't be back for several hours.
Julie's response shocked me from reality, when she told me, "I know Monica's not here. She tells me everything, and she told me about you. I'm here for you." With that Julie reached behind her back and untied her bikini top, leaving it held in place by the strings around her neck. "I've seen you watching me. Would you like to see what you have been watching?" she said, as she untied the last two strings and slowly dropped the top of her suit. Her nipples were just as I had imagined, dark and pointed, sticking out of her young under developed breasts as a treat for my eyes. I didn't know what to say, all I could do was stare as my cock started bulging at the front of my pants. I wanted to move forward, but I was stuck in place for what seemed like an eternity. My desire took over and I moved forward gently cupping her breasts in my hands as I lowered my face and took each nipple into my mouth savoring the texture of her soft white skin. "Monica told me how gentle and loving you are with her; so we decided that you could help me learn more about making-love", Julie whispered to me. I picked Julie up and laid her Monica's bed telling her "Your body is so beautiful, I will do whatever you want." Her response was music to my ears when she said, "Make-love to me right now." Quickly I removed my cloth and dropped them to the floor moving back onto the bed, completely naked, with Julie. With my erection pushed into the bed I continued to suckle on Julie's breasts. With my free hand I untied the side strings on her bikini bottom, lying open her cleanly shaven pubic area.