She spun around with her back to me and I put her into a type of arm bar. As we played and twisted I pushed her forward and she bent over with her head right between my legs. She was about six inches from my cock. I could tell she was looking right at it. She used her other hand to grab my housecoat and pull it up for a better view. I think she thought I wouldn't notice but how could I not. I was getting aroused again. My cock was getting hard and sneaking towards her face. I held her there as it grew closer and closer. I could now see that it was no longer covered by the housecoat and was only an inch from her face. Something in me twitched. I didn't care that she was my girlfriends sister or the fact that I was dating her sister. All I cared about was her seeing my cock and how she reacted to it. I was so excited.
As I held her there I realized I could see everything from the front in the decorative mirror I had been given for Christmas. I could feel the pre shot starting to ooze out of the tip of my cock. Her head rose in surprise but she didn't jump back. I watched her stick her tongue out as she thought about licking it. My insides danced with excitement. Lick it I thought. Come on lick it. She turned her head slightly and roughly banged her face off of the head. "Ouch" she said. I let go immediately. She hopped off of my lap and ran upstairs. I saw her wipe her cheek as she headed down the hallway. I thought for sure I was dead and that she would certainly tell her mother. I covered up and headed upstairs to try to calm the situation and hopefully get my self out of trouble.
When I got upstairs she was nowhere in sight. I finally noticed her bedroom door was shut. I knew that it didn't lock so I pushed it open. Suddenly my eyes were filled with her naked ass lying on the bed partially covered. Her shorts were around her feet. She quickly pulled them under the blanket as she heard me enter the room. She turned to look at me. Her face was fully blushed and panicked. I asked if she was ok and she said she was. As I moved to leave the room I saw the glob of my pre shot wasn't on her cheek but now on the edge of her mouth. I paused for a moment as I looked at her before I headed out and back down stairs.
I sat in my chair as I worried about the implications of what had just happened. It seemed like an hour before she reappeared in the door way. I said I was sorry if I hurt her and she smiled and said she was fine. I shook as she stepped past me and lay on the floor on her stomach. We watched TV for about ten minutes before I noticed she had her legs open. There in front of me staring directly at me was her little pink pussy, naked and pink. I gasped at the sight and thought she must have liked what she saw. I was even more excited than before. I watched for a while before she climbed back up on my lap and cuddled in before she started play fighting some more.
Where was this going and where would it end. I was brought back to the poolside as I felt the cold water splash onto my chest. She was laughing at me she swam away. I looked down to see my cock had formed a tent in my bathing suit that was hard to miss. I probably got splashed because she noticed it. She looked at me and said are you coming. I paused as I caught a sly look on her face as to her double meaning. I rose from my chair and headed for the pool to at least cool off. I suddenly understood how the water could feel so cold when it was so hot.