Family Affair

I have been having sex with my two older sisters for a year now. They are both ugly but have the hottest bodies. It started when they were laying by the pool in bikinis. One is 26 and the other is 29. They both had towels over their faces to keep the sun off, so I wasn't distracted by their ugliness, and could only see their hot bodies. I was watching them from the pool room as I was rubbing one out, when my younger sister got up and headed my way. The poolroom isn't very big and there's no place to hide, and as soon as she walked in, I got down on my knees and started mouthing her through her bikini bottom. She grabbed my head and slipped her bikini aside and was grinding my face until she orgasmed. We didn't speak at all. She pulled me up and tried to kiss me, but I turned my head and hugged her instead. I just couldn't kiss that mug.
She walked out and said something to my older sister, and she gets up and heads my way. She's not as ugly as my younger sis, and as soon as she walked in the pool room, she pulled her bikini bottom aside and I got down and repeated the deed. So this was the beginning of a year long affair with them both, but I still won't kiss them.