Suddenly the door opens and out comes my sister to my friend. Ingeborg, is her name. I looked at her and said "hello" she replied "hello" and came ove... to me, she stood next to me, as if she had something to say, she looked like she wanted something. she looks at me and says "I've seen you looked at me tonight, do you like my dress?" I am completely put off and my immediate reaction is to apologize. It's my friend's little sister, it's forbidden fruit. She says, "Don't worry, I won't say. I could see Ian had moved and was fucking her face really hard and she was loving it.She stopped both of us and told us she was in charge and we should help her have her fantasy. We had both been prepared for this after weeks of her telling us what was going to be and countless wanks on cam. She squatted over my face and come down so I could lick her pussy again while she bent forward and sucked my cock, then Ian pushed his cock into her from behind, it was only an inch away from my face, I. We were heavily petting each other and I was running my hand over her breast as her hand was going up my leg and feel my hard cock. I sat her on one of the steps to the pool and pulled down my swim trunks and started stroking my hard cock. The look in her eyes said it all and to top it off she was biting her tongue while giving me "the look". At which time we began to kiss ever so more passionately with our hands going through each others hair and touching ever part of each others bodies. She. I decided to undress in front of her and soon as i did it I thought that her panties will be there and I got a boner that I'll again have her wear my cum socked panties. As soon as i removed my pants but still wearing the underwear, with a sideeye I saw her looking at the outline of my cock which was making with the underwear I then intentionally got it more harder by using my strength and her eyes literally popped out. I then went bathed and did the same. But this time i was caught she knew I.