The thought of dick lingers on your mind. You think of a threesome, of a way that, in your mind, you can dive into your dream while keeping a sense of reality. Thinking of her lips and his dick. His dick in your face, his dick in your mouth, her pussy on your dick. You bounce in between this fantasy and reality because at the root is what you've wanted all along --- dick. You don't need convincing, you already know the truth, but it's fun getting your there anyway.