I have three sisters half sisters though.. so i guess its only half as bad, and they are all very attractive, and all my friends are practically in love with them, and it pisses me off. But I never flirt with them, i just treat them like normal people, like a friend. I dont ever look at them as sexual attractive, and I would never flirt with my sister.. lol. And Ive never wanted to fuck them, never had the thought, but i have caught my self accidentally checking them out, but more as just a passerby, look I do with all girls.