Boy used to get girls to experience a threesome

Not that he was an innocent boy, not at all, he had experienced sex in various ways without ever feeling the need for it to be something constant, however when his girlfriends talked to him to ask him for this strange favor, he had his reservations at first, he was not thrilled to be a used object but their insistence was stronger. They both wanted to participate in a threesome, but on the chance to be together and see each other in a way they had never been before, the idea of him being with them was just an excuse to hide the real kinky desire between them.