I can say that the guy is very lucky that such cute beauties wanted to please him, and each fondled his excited cock with her hot tongue. The three girlfriends don't forget about each other either - passionate kisses drive them crazy, and as they suck the powerful shaft from three sides, their eyes on the camera are so languid and you can see that they really enjoy this process. Eh, how I would love to fuck their tight slits and pour my fountain on all three of them!
Well, half-brothers and half-sisters are not related at all, so it can't be considered something bad or immoral. It's no surprise that an adult guy and girl, with no regular sexual partners and almost daily being around each other, suddenly felt attracted on a sexual level to each other. Considering that the girl liked it (the guy then no question), I think they will continue to practice this kind of thing from time to time.
To meet three hot girls in one pool is great luck! Each of them wants to look like the best female. And to draw conclusions, you have to fuck them all. It seems the lucky guy has been in a fairy tale!