My gf's sister is hot

Immigrants took photos of my gf's sister

I'm in the bathroom now jerking for my gf's sister. She is a hot 28 years old white slut from Europe. She is tall almost 180 cm with size 44 EU feet.
Her tall legs, her long toes, her huge boobs and her big ass makes me cum every day for years.
I know that she had few sexual adventures in the past but she is single more than two years now so I'm sure she is getting wet all the time. The hardest part for me is that she is staying in our house at least two days per week. She is feeling totally free to our house, walking around only in her underwear, chill on the bed or the sofa only makes things worse for me.

So today we went all together to the beach. She was wearing a tiny bikini as always. But this time when we went out of the water, her bikini had left her pussy lips out and totally visible. She didn't notice it, my gf didn't notice it either so I didn't say anything. We went out and walked to the public showers. And there was the good part for me. I have fantasies for years to watch her get fucked by Indian immigrants. Of course it's a fantasy I know it will never come true. But today when we get to the shower of the beach there were a group of 7 Indian immigrants!
My dick got hard immediately just to the idea they will watch her. I saw them not only watched her body but also talk in their language while watching her. They saw her pussy lips were visible and I just smiled at them and they smiled back. Next thing they did was to have their phones on their hands taking photos secretly. I was so hard. I'm still thinking about them masturbating for her body and her pussy lips. They knew I knew but since I didn't say anything they kept taking photos. I saw them walking left right all the time with their phones on their hands.
She said to me "why they don't move away?"
I said "don't think about it they are just poor immigrants enjoying the sea".
The guys smiled all the time and talked in their language. I'm sure that at least one of them recorded a video while she was having a shower. This guy smiled to me many times and gave me a secretly thumbs up.
I was so happy and so horny for finally watch Indian immigrants enjoying her body.
Tomorrow we will go again, I wish the Indians be there. If they are there I'm thinking about find a way to give them her insta!