My sister Rachel was now living at home with my parents. She ended up getting pregnant while at college. My parents were furious with her as she was going to drop out of her last year at school. My parents tried to get her to tell them who the guy was but she wouldn't tell. My Dad had steam coming out of his ears for some weeks.
My sister was going to have the baby and then put it up for adoption. While she was at home I was her go-to guy. I was eighteen at the time and my sister was having me drive her around. I was taking her to the doctor's office whenever she had a checkup. I would look at her baby bump and I hate to admit it, my cock would get hard.
Rachel's breasts were getting bigger and that was turning me on. One day after I took her to the doctor we got back home in the afternoon. My sister went to her room and closed the door. I knew what she was going to do. I could hear her moaning when she closed the door. I figured she was playing with her pussy. That day she was getting loud. I put my ear up to the door and I heard the sound of a vibrator going.
I stood outside and I was rubbing my crotch. I knew this wasn't a good idea but all that moaning made me horny. I got my courage up and I cracked the door to Rachel's room. When I looked in I saw my naked sister working the vibrator all over her opening. I couldn't take it anymore. I opened the door and stepped inside.
"What are you doing in here Brad?." My sister's eyes went wide.
"I heard your noises and I had to see you," I told her.
My sister turned off the vibrator. Her legs were spread wide and I was staring at her big belly. I did something that changed our relationship. I walked close to the bed. Rachel and I just looked at each other for the longest time. I pulled my shirt off and I undid my pants and pushed them and my briefs down to the floor. Rachel had her eyes glued to my dick. I was already hard and my seven inch cock was standing straight out.
"No Brad," that was all my sister could say to me.
I didn't care anymore. I got up onto her bed and I spread her legs even further apart. I had to taste my pregnant sister. I lowered my face and I used my tongue to lick all over my sister's gash. Rachel didn't fight me. She began to moan as I used my tongue and mouth to kiss and lick her pussy. I slipped a finger into her hot tunnel. Rachel was wet and her pussy was so warm. I licked up and down her gash. Rachel reached out and put her hands on my head.
I must have been hitting just the right spot. Rachel didn't want me to pull away. She need me licking her slit. I don't know how long I licked my sister. I just knew I had to have her. I pulled my head away and got up onto my knees. Rachel knew exactly what I had in mind.