Dean was careful while his tongue began to worship each warm fold of her slit, before bathing her clit. He would run the whole of his tongue over it, from as far back as he could touch to the very tip. Like he was licking a melting ice cream. His fingers continued to explore and probe. At least, until he felt that tell tale patch of flesh.
He began to rub the pads of his fingers over that spot, with gentle, but thrusting motions. So he was essentially fucking her with his fingers.